{"id":89588,"date":"2026-08-03T09:57:31","date_gmt":"2026-08-03T01:57:31","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/89588.html"},"modified":"2026-08-03T09:57:31","modified_gmt":"2026-08-03T01:57:31","slug":"2-10-%e7%ae%80%e6%98%93-redis-%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%ae%9e%e6%88%98%ef%bc%88%e4%b8%8b%ef%bc%89%ef%bc%9a%e5%91%bd%e4%bb%a4%e8%a7%a3%e6%9e%90%e4%b8%8e%e5%b9%b6%e5%8f%91%e5%a4%84%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/89588.html","title":{"rendered":"2.10 \u7b80\u6613 Redis \u670d\u52a1\u5668\u5b9e\u6218\uff08\u4e0b\uff09\uff1a\u547d\u4ee4\u89e3\u6790\u4e0e\u5e76\u53d1\u5904\u7406\uff0c\u5b8c\u6574\u9879\u76ee\u5b9e\u73b0"},"content":{"rendered":"

2.10 \u7b80\u6613 Redis \u670d\u52a1\u5668\u5b9e\u6218（\u4e0b）：\u547d\u4ee4\u89e3\u6790\u4e0e\u5e76\u53d1\u5904\u7406，\u5b8c\u6574\u9879\u76ee\u5b9e\u73b0<\/h2>\n

\u5f15\u8a00：\u8ba9\u670d\u52a1\u5668\u201c\u6d3b\u201d\u8d77\u6765<\/h3>\n

\u5728\u4e0a\u4e00\u7ae0，\u6211\u4eec\u5df2\u7ecf\u4e3a\u6211\u4eec\u7684\u7b80\u6613 Redis \u670d\u52a1\u5668\u8bbe\u8ba1\u4e86\u84dd\u56fe，\u642d\u5efa\u4e86\u9aa8\u67b6\u3002\u6211\u4eec\u5b9a\u4e49\u4e86\u529f\u80fd\u8303\u56f4，\u9009\u62e9\u4e86\u5f02\u6b65\u67b6\u6784，\u8bbe\u8ba1\u4e86\u7ebf\u7a0b\u5b89\u5168\u7684\u6570\u636e\u5b58\u50a8，\u5e76\u5bf9 RESP \u534f\u8bae\u6709\u4e86\u521d\u6b65\u7684\u4e86\u89e3\u3002\u73b0\u5728，\u4e07\u4e8b\u4ff1\u5907，\u53ea\u6b20\u4e1c\u98ce\u3002<\/p>\n

\u5728\u672c\u7ae0，\u6211\u4eec\u5c06\u5b8c\u6210\u6240\u6709\u6838\u5fc3\u7684\u7f16\u7801\u5de5\u4f5c，\u5c06\u4e0a\u4e00\u7ae0\u7684\u7406\u8bba\u8bbe\u8ba1\u8f6c\u5316\u4e3a\u53ef\u8fd0\u884c\u7684\u3001\u529f\u80fd\u5b8c\u5907\u7684\u670d\u52a1\u5668\u3002\u6211\u4eec\u5c06\u4e13\u6ce8\u4e8e\u4ee5\u4e0b\u51e0\u4e2a\u5173\u952e\u73af\u8282：<\/p>\n

  • \u8fde\u63a5\u5904\u7406：\u5b9e\u73b0\u5904\u7406\u5355\u4e2a\u5ba2\u6237\u7aef\u8fde\u63a5\u7684\u5b8c\u6574\u751f\u547d\u5468\u671f\u3002<\/li>\n
  • \u6d41\u5f0f RESP \u89e3\u6790：\u4f7f\u7528 tokio_util::codec \u6784\u5efa\u4e00\u4e2a\u5065\u58ee\u7684\u3001\u80fd\u5904\u7406 TCP \u5b57\u8282\u6d41\u7684 RESP \u89e3\u6790\u5668\u3002<\/li>\n
  • \u547d\u4ee4\u5206\u53d1\u4e0e\u6267\u884c：\u6839\u636e\u89e3\u6790\u51fa\u7684\u547d\u4ee4，\u8c03\u7528\u76f8\u5e94\u7684\u6570\u636e\u5e93\u64cd\u4f5c\u3002<\/li>\n
  • \u54cd\u5e94\u7f16\u7801\u4e0e\u53d1\u9001：\u5c06\u6267\u884c\u7ed3\u679c\u7f16\u7801\u4e3a RESP \u683c\u5f0f\u5e76\u53d1\u9001\u56de\u5ba2\u6237\u7aef\u3002<\/li>\n

    \u5b8c\u6210\u672c\u7ae0\u540e，\u4f60\u5c06\u62e5\u6709\u4e00\u4e2a\u53ef\u4ee5\u5b9e\u9645\u8fd0\u884c\u7684\u3001\u652f\u6301\u591a\u79cd\u6838\u5fc3 Redis \u547d\u4ee4\u7684\u5e76\u53d1\u670d\u52a1\u5668，\u5e76\u5bf9\u6784\u5efa\u9ad8\u6027\u80fd\u5f02\u6b65\u7f51\u7edc\u670d\u52a1\u6709\u66f4\u6df1\u523b\u3001\u66f4\u5177\u4f53\u7684\u7406\u89e3\u3002<\/p>\n

    1. \u5065\u58ee\u7684\u8fde\u63a5\u5904\u7406<\/h3>\n

    \u6211\u4eec\u9700\u8981\u4e00\u4e2a\u6a21\u5757\u6765\u5c01\u88c5\u5904\u7406\u5355\u4e2a\u5ba2\u6237\u7aef TcpStream \u7684\u903b\u8f91\u3002<\/p>\n

    \/\/ src\/connection.rs<\/span>
    \nuse<\/span> crate<\/span>::<\/span>db::<\/span><\/span>Db<\/span>;<\/span>
    \nuse<\/span> tokio::<\/span>net::<\/span><\/span>TcpStream<\/span>;<\/span><\/p>\n

    pub<\/span> struct<\/span> Connection<\/span> {<\/span>
    \n stream:<\/span> TcpStream<\/span>,<\/span>
    \n db:<\/span> Db<\/span>,<\/span>
    \n}<\/span><\/p>\n

    impl<\/span> Connection<\/span> {<\/span>
    \n pub<\/span> fn<\/span> new<\/span>(<\/span>stream:<\/span> TcpStream<\/span>,<\/span> db:<\/span> Db<\/span>)<\/span> -><\/span> Self<\/span> {<\/span>
    \n Connection<\/span> {<\/span> stream,<\/span> db }<\/span>
    \n }<\/span><\/p>\n

    pub<\/span> async<\/span> fn<\/span> handle<\/span>(<\/span>&<\/span>mut<\/span> self<\/span>)<\/span> -><\/span> anyhow::<\/span><\/span>Result<\/span><<\/span>(<\/span>)<\/span>><\/span> {<\/span>
    \n loop<\/span> {<\/span>
    \n \/\/ 1. \u4ece\u6d41\u4e2d\u8bfb\u53d6\u4e00\u4e2a RESP Frame<\/span>
    \n \/\/ let frame = self.read_frame().await?;<\/span><\/p>\n

    \/\/ \u5982\u679c read_frame \u8fd4\u56de None，\u8868\u793a\u5ba2\u6237\u7aef\u5173\u95ed\u4e86\u8fde\u63a5<\/span>
    \n \/\/ if frame.is_none() {<\/span>
    \n \/\/ return Ok(());<\/span>
    \n \/\/ }<\/span><\/p>\n

    \/\/ 2. \u5c06 Frame \u8f6c\u6362\u4e3a Command<\/span>
    \n \/\/ let command = Command::from_frame(frame.unwrap())?;<\/span><\/p>\n

    \/\/ 3. \u6267\u884c\u547d\u4ee4<\/span>
    \n \/\/ let response = command.apply(&self.db);<\/span><\/p>\n

    \/\/ 4. \u5c06\u54cd\u5e94\u5199\u56de\u6d41\u4e2d<\/span>
    \n \/\/ self.write_frame(&response).await?;<\/span>
    \n }<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    \u8fd9\u662f\u4e00\u4e2a\u57fa\u672c\u7684\u5904\u7406\u5faa\u73af\u6846\u67b6\u3002\u73b0\u5728\u6211\u4eec\u9700\u8981\u586b\u5145\u5176\u4e2d\u7684\u7ec6\u8282，\u6700\u5173\u952e\u7684\u5c31\u662f\u5982\u4f55\u4ece TcpStream \u4e2d\u5065\u58ee\u5730\u8bfb\u53d6 RESP \u5e27\u3002<\/p>\n

    2. \u6d41\u5f0f RESP \u89e3\u6790：\u4f7f\u7528 tokio_util::codec<\/h3>\n

    \u76f4\u63a5\u5728 TcpStream \u4e0a\u8bfb\u5199\u5b57\u8282\u5e76\u81ea\u5df1\u7ba1\u7406\u7f13\u51b2\u533a\u548c\u4e0d\u5b8c\u6574\u7684\u6d88\u606f\u662f\u975e\u5e38\u590d\u6742\u4e14\u5bb9\u6613\u51fa\u9519\u7684\u3002tokio \u751f\u6001\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5f3a\u5927\u7684\u5de5\u5177 tokio_util::codec \u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n

    Codec Trait \u5141\u8bb8\u6211\u4eec\u5b9a\u4e49\u5982\u4f55\u5c06\u4e00\u4e2a\u5b57\u8282\u6d41 (BytesMut) \u89e3\u7801\u6210\u6211\u4eec\u7684\u6d88\u606f\u7c7b\u578b（Frame），\u4ee5\u53ca\u5982\u4f55\u5c06\u6211\u4eec\u7684\u6d88\u606f\u7c7b\u578b\u7f16\u7801\u6210\u5b57\u8282\u3002<\/p>\n

    \u9996\u5148，\u6dfb\u52a0\u4f9d\u8d56：<\/p>\n

    [dependencies]
    \n# …
    \ntokio-util = { version = "0.7", features = ["codec"] }
    \nbytes = "1"<\/p>\n

    \u5b9e\u73b0 Decoder Trait<\/h4>\n

    Decoder \u8d1f\u8d23\u4ece\u5b57\u8282\u6d41\u4e2d\u89e3\u6790\u51fa Frame\u3002<\/p>\n

    \/\/ src\/resp\/codec.rs<\/span>
    \nuse<\/span> super<\/span>::<\/span>frame::<\/span><\/span>Frame<\/span>;<\/span>
    \nuse<\/span> bytes::<\/span><\/span>{<\/span>Buf<\/span>,<\/span> BytesMut<\/span>}<\/span>;<\/span>
    \nuse<\/span> tokio_util::<\/span>codec::<\/span><\/span>Decoder<\/span>;<\/span><\/p>\n

    pub<\/span> struct<\/span> RespCodec<\/span>;<\/span><\/p>\n

    impl<\/span> Decoder<\/span> for<\/span> RespCodec<\/span> {<\/span>
    \n type<\/span> Item<\/span> =<\/span> Frame<\/span>;<\/span>
    \n type<\/span> Error<\/span> =<\/span> anyhow::<\/span><\/span>Error<\/span>;<\/span><\/p>\n

    fn<\/span> decode<\/span>(<\/span>&<\/span>mut<\/span> self<\/span>,<\/span> src:<\/span> &<\/span>mut<\/span> BytesMut<\/span>)<\/span> -><\/span> Result<\/span><<\/span>Option<\/span><<\/span>Self<\/span>::<\/span>Item<\/span>><\/span>,<\/span> Self<\/span>::<\/span>Error<\/span>><\/span> {<\/span>
    \n \/\/ \u5982\u679c src \u4e3a\u7a7a，\u8bf4\u660e\u6ca1\u6709\u6570\u636e\u53ef\u8bfb<\/span>
    \n if<\/span> src.<\/span>is_empty<\/span>(<\/span>)<\/span> {<\/span>
    \n return<\/span> Ok<\/span>(<\/span>None<\/span>)<\/span>;<\/span>
    \n }<\/span><\/p>\n

    \/\/ \u5c1d\u8bd5\u89e3\u6790\u4e00\u4e2a Frame<\/span>
    \n \/\/ check \u51fd\u6570\u4f1a\u68c0\u67e5\u662f\u5426\u6709\u8db3\u591f\u7684\u6570\u636e\u6765\u89e3\u6790\u4e00\u4e2a\u5b8c\u6574\u7684 Frame<\/span>
    \n \/\/ parse \u51fd\u6570\u5219\u8fdb\u884c\u5b9e\u9645\u7684\u89e3\u6790<\/span>
    \n \/\/ \u8fd9\u4e24\u4e2a\u51fd\u6570\u662f\u6211\u4eec\u9700\u8981\u81ea\u5df1\u5b9e\u73b0\u7684<\/span>
    \n match<\/span> self<\/span>.<\/span>check<\/span>(<\/span>src)<\/span> {<\/span>
    \n Ok<\/span>(<\/span>len)<\/span> =><\/span> {<\/span>
    \n let<\/span> frame =<\/span> self<\/span>.<\/span>parse<\/span>(<\/span>&<\/span>src[<\/span>..<\/span>len]<\/span>)<\/span>;<\/span>
    \n \/\/ \u89e3\u6790\u5b8c\u6210\u540e，\u4ece\u7f13\u51b2\u533a\u4e2d\u79fb\u9664\u5df2\u5904\u7406\u7684\u6570\u636e<\/span>
    \n src.<\/span>advance<\/span>(<\/span>len)<\/span>;<\/span>
    \n Ok<\/span>(<\/span>Some<\/span>(<\/span>frame)<\/span>)<\/span>
    \n }<\/span>
    \n Err<\/span>(<\/span>e)<\/span> if<\/span> e.<\/span>is_incomplete<\/span>(<\/span>)<\/span> =><\/span> {<\/span>
    \n \/\/ \u6570\u636e\u4e0d\u5b8c\u6574，\u7b49\u5f85\u66f4\u591a\u6570\u636e<\/span>
    \n Ok<\/span>(<\/span>None<\/span>)<\/span>
    \n }<\/span>
    \n Err<\/span>(<\/span>e)<\/span> =><\/span> Err<\/span>(<\/span>e.<\/span>into<\/span>(<\/span>)<\/span>)<\/span>,<\/span> \/\/ \u771f\u6b63\u7684\u89e3\u6790\u9519\u8bef<\/span>
    \n }<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    impl<\/span> RespCodec<\/span> {<\/span>
    \n \/\/ \u8fd9\u662f\u4e00\u4e2a\u7b80\u5316\u7684 check + parse \u7ec4\u5408<\/span>
    \n \/\/ \u751f\u4ea7\u7ea7\u7684\u5b9e\u73b0\u4f1a\u66f4\u7cbe\u7ec6<\/span>
    \n fn<\/span> check<\/span>(<\/span>&<\/span>self<\/span>,<\/span> src:<\/span> &<\/span>BytesMut<\/span>)<\/span> -><\/span> Result<\/span><<\/span>usize<\/span>,<\/span> RespError<\/span>><\/span> {<\/span>
    \n \/\/ … (\u68c0\u67e5 src \u4e2d\u662f\u5426\u6709\u5b8c\u6574\u7684 RESP \u5e27，\u8fd4\u56de\u5e27\u7684\u603b\u5b57\u8282\u957f\u5ea6)<\/span>
    \n \/\/ \u8fd9\u662f\u89e3\u6790\u5668\u4e2d\u6700\u590d\u6742\u7684\u90e8\u5206<\/span>
    \n \/\/ \u4e3a\u4e86\u7b80\u5316，\u6211\u4eec\u6682\u65f6\u8df3\u8fc7\u5b8c\u6574\u5b9e\u73b0，\u4f46\u4f60\u9700\u8981\u77e5\u9053\u5b83\u7684\u4f5c\u7528<\/span>
    \n \/\/ \u8fd9\u91cc\u6211\u4eec\u5047\u8bbe\u603b\u80fd\u627e\u5230\u5b8c\u6574\u7684\u5e27<\/span>
    \n find_complete_frame_length<\/span>(<\/span>src)<\/span>
    \n }<\/span><\/p>\n

    fn<\/span> parse<\/span>(<\/span>&<\/span>self<\/span>,<\/span> data:<\/span> &<\/span>[<\/span>u8<\/span>]<\/span>)<\/span> -><\/span> Frame<\/span> {<\/span>
    \n \/\/ … (\u6839\u636e data[0] \u7684\u7c7b\u578b\u5b57\u7b26\u8fdb\u884c\u89e3\u6790)<\/span>
    \n \/\/ \u8fd9\u4e2a\u51fd\u6570\u5047\u8bbe data \u5305\u542b\u4e00\u4e2a\u5b8c\u6574\u7684\u5e27<\/span>
    \n parse_frame_from_slice<\/span>(<\/span>data)<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    \/\/ \u9519\u8bef\u7c7b\u578b<\/span>
    \n#[derive(Debug, thiserror::Error)]<\/span>
    \npub<\/span> enum<\/span> RespError<\/span> {<\/span>
    \n #[error("Incomplete frame"<\/span>)]<\/span>
    \n Incomplete<\/span>,<\/span>
    \n #[error("Invalid frame: {0}"<\/span>)]<\/span>
    \n Invalid<\/span>(<\/span>String<\/span>)<\/span>,<\/span>
    \n}<\/span><\/p>\n

    \/\/ \u6a21\u62df\u51fd\u6570，\u5b9e\u9645\u5b9e\u73b0\u9700\u8981\u9010\u5b57\u8282\u89e3\u6790<\/span>
    \nfn<\/span> find_complete_frame_length<\/span>(<\/span>_src:<\/span> &<\/span>BytesMut<\/span>)<\/span> -><\/span> Result<\/span><<\/span>usize<\/span>,<\/span> RespError<\/span>><\/span> {<\/span> \/* … *\/<\/span> Ok<\/span>(<\/span>0<\/span>)<\/span> }<\/span>
    \nfn<\/span> parse_frame_from_slice<\/span>(<\/span>_data:<\/span> &<\/span>[<\/span>u8<\/span>]<\/span>)<\/span> -><\/span> Frame<\/span> {<\/span> \/* … *\/<\/span> Frame<\/span>::<\/span>Null<\/span> }<\/span><\/p>\n

    \u5b9e\u73b0 Encoder Trait<\/h4>\n

    Encoder \u8d1f\u8d23\u5c06 Frame \u8f6c\u6362\u6210\u5b57\u8282，\u5199\u5165\u7f13\u51b2\u533a\u3002<\/p>\n

    \/\/ src\/resp\/codec.rs<\/span>
    \nuse<\/span> bytes::<\/span><\/span>BufMut<\/span>;<\/span>
    \nuse<\/span> tokio_util::<\/span>codec::<\/span><\/span>Encoder<\/span>;<\/span><\/p>\n

    impl<\/span> Encoder<\/span><<\/span>Frame<\/span>><\/span> for<\/span> RespCodec<\/span> {<\/span>
    \n type<\/span> Error<\/span> =<\/span> anyhow::<\/span><\/span>Error<\/span>;<\/span><\/p>\n

    fn<\/span> encode<\/span>(<\/span>&<\/span>mut<\/span> self<\/span>,<\/span> item:<\/span> Frame<\/span>,<\/span> dst:<\/span> &<\/span>mut<\/span> BytesMut<\/span>)<\/span> -><\/span> Result<\/span><<\/span>(<\/span>)<\/span>,<\/span> Self<\/span>::<\/span>Error<\/span>><\/span> {<\/span>
    \n match<\/span> item {<\/span>
    \n Frame<\/span>::<\/span>Simple<\/span>(<\/span>s)<\/span> =><\/span> {<\/span>
    \n dst.<\/span>put_u8<\/span>(<\/span>b'+'<\/span>)<\/span>;<\/span>
    \n dst.<\/span>put_slice<\/span>(<\/span>s.<\/span>as_bytes<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
    \n dst.<\/span>put_slice<\/span>(<\/span>b"\\\\r\\\\n"<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n Frame<\/span>::<\/span>Error<\/span>(<\/span>s)<\/span> =><\/span> {<\/span>
    \n dst.<\/span>put_u8<\/span>(<\/span>b'-'<\/span>)<\/span>;<\/span>
    \n dst.<\/span>put_slice<\/span>(<\/span>s.<\/span>as_bytes<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
    \n dst.<\/span>put_slice<\/span>(<\/span>b"\\\\r\\\\n"<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n Frame<\/span>::<\/span>Integer<\/span>(<\/span>i)<\/span> =><\/span> {<\/span>
    \n dst.<\/span>put_u8<\/span>(<\/span>b':'<\/span>)<\/span>;<\/span>
    \n dst.<\/span>put_slice<\/span>(<\/span>i.<\/span>to_string<\/span>(<\/span>)<\/span>.<\/span>as_bytes<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
    \n dst.<\/span>put_slice<\/span>(<\/span>b"\\\\r\\\\n"<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n Frame<\/span>::<\/span>Bulk<\/span>(<\/span>data)<\/span> =><\/span> {<\/span>
    \n dst.<\/span>put_u8<\/span>(<\/span>b'$'<\/span>)<\/span>;<\/span>
    \n dst.<\/span>put_slice<\/span>(<\/span>data.<\/span>len<\/span>(<\/span>)<\/span>.<\/span>to_string<\/span>(<\/span>)<\/span>.<\/span>as_bytes<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
    \n dst.<\/span>put_slice<\/span>(<\/span>b"\\\\r\\\\n"<\/span>)<\/span>;<\/span>
    \n dst.<\/span>put_slice<\/span>(<\/span>&<\/span>data)<\/span>;<\/span>
    \n dst.<\/span>put_slice<\/span>(<\/span>b"\\\\r\\\\n"<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n Frame<\/span>::<\/span>Array<\/span>(<\/span>frames)<\/span> =><\/span> {<\/span>
    \n dst.<\/span>put_u8<\/span>(<\/span>b'*'<\/span>)<\/span>;<\/span>
    \n dst.<\/span>put_slice<\/span>(<\/span>frames.<\/span>len<\/span>(<\/span>)<\/span>.<\/span>to_string<\/span>(<\/span>)<\/span>.<\/span>as_bytes<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
    \n dst.<\/span>put_slice<\/span>(<\/span>b"\\\\r\\\\n"<\/span>)<\/span>;<\/span>
    \n for<\/span> frame in<\/span> frames {<\/span>
    \n self<\/span>.<\/span>encode<\/span>(<\/span>frame,<\/span> dst)<\/span>?<\/span>;<\/span>
    \n }<\/span>
    \n }<\/span>
    \n Frame<\/span>::<\/span>Null<\/span> =><\/span> {<\/span>
    \n dst.<\/span>put_slice<\/span>(<\/span>b"$-1\\\\r\\\\n"<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n }<\/span>
    \n Ok<\/span>(<\/span>(<\/span>)<\/span>)<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    \u7531\u4e8e\u4e00\u4e2a\u5065\u58ee\u7684 check \u548c parse \u5b9e\u73b0\u975e\u5e38\u5197\u957f，\u4f1a\u504f\u79bb\u672c\u7ae0\u7684\u91cd\u70b9，\u6211\u4eec\u5c06\u76f4\u63a5\u4f7f\u7528\u4e00\u4e2a\u793e\u533a\u63d0\u4f9b\u7684\u3001\u6216\u8005\u9884\u5148\u5199\u597d\u7684 codec \u5b9e\u73b0\u3002\u5173\u952e\u662f\u7406\u89e3\u5b83\u7684\u4f5c\u7528\u3002<\/p>\n

    \u5728 Connection \u4e2d\u4f7f\u7528 Codec<\/h4>\n

    \u73b0\u5728\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Framed \u6765\u5305\u88c5\u6211\u4eec\u7684 TcpStream，\u5b83\u4f1a\u5e2e\u6211\u4eec\u5904\u7406\u6240\u6709\u7f13\u51b2\u548c\u7f16\u89e3\u7801\u7684\u7ec6\u8282\u3002<\/p>\n

    \/\/ src\/connection.rs<\/span>
    \nuse<\/span> crate<\/span>::<\/span>command::<\/span><\/span>Command<\/span>;<\/span>
    \nuse<\/span> crate<\/span>::<\/span>db::<\/span><\/span>Db<\/span>;<\/span>
    \nuse<\/span> crate<\/span>::<\/span>resp::<\/span><\/span>{<\/span>RespCodec<\/span>,<\/span> Frame<\/span>}<\/span>;<\/span> \/\/ \u5047\u8bbe RespCodec \u5df2\u7ecf\u5b8c\u6574\u5b9e\u73b0<\/span>
    \nuse<\/span> tokio::<\/span>net::<\/span><\/span>TcpStream<\/span>;<\/span>
    \nuse<\/span> tokio_util::<\/span>codec::<\/span><\/span>Framed<\/span>;<\/span>
    \nuse<\/span> futures::<\/span><\/span>{<\/span>SinkExt<\/span>,<\/span> StreamExt<\/span>}<\/span>;<\/span><\/p>\n

    pub<\/span> struct<\/span> Connection<\/span> {<\/span>
    \n \/\/ Framed \u5c06\u6d41\u548c\u7f16\u89e3\u7801\u5668\u7ec4\u5408\u5728\u4e00\u8d77<\/span>
    \n framed:<\/span> Framed<\/span><<\/span>TcpStream<\/span>,<\/span> RespCodec<\/span>><\/span>,<\/span>
    \n db:<\/span> Db<\/span>,<\/span>
    \n}<\/span><\/p>\n

    impl<\/span> Connection<\/span> {<\/span>
    \n pub<\/span> fn<\/span> new<\/span>(<\/span>stream:<\/span> TcpStream<\/span>,<\/span> db:<\/span> Db<\/span>)<\/span> -><\/span> Self<\/span> {<\/span>
    \n Connection<\/span> {<\/span>
    \n framed:<\/span> Framed<\/span>::<\/span>new<\/span>(<\/span>stream,<\/span> RespCodec<\/span>)<\/span>,<\/span>
    \n db,<\/span>
    \n }<\/span>
    \n }<\/span><\/p>\n

    pub<\/span> async<\/span> fn<\/span> handle<\/span>(<\/span>&<\/span>mut<\/span> self<\/span>)<\/span> -><\/span> anyhow::<\/span><\/span>Result<\/span><<\/span>(<\/span>)<\/span>><\/span> {<\/span>
    \n \/\/ StreamExt \u63d0\u4f9b\u4e86 next() \u65b9\u6cd5<\/span>
    \n while<\/span> let<\/span> Some<\/span>(<\/span>result)<\/span> =<\/span> self<\/span>.<\/span>framed.<\/span>next<\/span>(<\/span>)<\/span>.<\/span>await<\/span> {<\/span>
    \n match<\/span> result {<\/span>
    \n Ok<\/span>(<\/span>frame)<\/span> =><\/span> {<\/span>
    \n \/\/ \u5c06 Frame \u8f6c\u6362\u4e3a Command<\/span>
    \n let<\/span> command =<\/span> Command<\/span>::<\/span>from_frame<\/span>(<\/span>frame)<\/span>?<\/span>;<\/span><\/p>\n

    println!<\/span>(<\/span>"\u6267\u884c\u547d\u4ee4: {:?}"<\/span>,<\/span> command)<\/span>;<\/span><\/p>\n

    \/\/ \u6267\u884c\u547d\u4ee4<\/span>
    \n let<\/span> response =<\/span> self<\/span>.<\/span>apply_command<\/span>(<\/span>command)<\/span>.<\/span>await<\/span>;<\/span><\/p>\n

    \/\/ SinkExt \u63d0\u4f9b\u4e86 send() \u65b9\u6cd5<\/span>
    \n self<\/span>.<\/span>framed.<\/span>send<\/span>(<\/span>response)<\/span>.<\/span>await<\/span>?<\/span>;<\/span>
    \n }<\/span>
    \n Err<\/span>(<\/span>e)<\/span> =><\/span> {<\/span>
    \n \/\/ \u53d1\u751f\u89e3\u6790\u9519\u8bef<\/span>
    \n eprintln!<\/span>(<\/span>"\u89e3\u6790 Frame \u9519\u8bef: {}"<\/span>,<\/span> e)<\/span>;<\/span>
    \n return<\/span> Err<\/span>(<\/span>e)<\/span>;<\/span>
    \n }<\/span>
    \n }<\/span>
    \n }<\/span>
    \n Ok<\/span>(<\/span>(<\/span>)<\/span>)<\/span>
    \n }<\/span><\/p>\n

    async<\/span> fn<\/span> apply_command<\/span>(<\/span>&<\/span>self<\/span>,<\/span> cmd:<\/span> Command<\/span>)<\/span> -><\/span> Frame<\/span> {<\/span>
    \n \/\/ … (\u5c06\u5728\u4e0b\u4e00\u8282\u5b9e\u73b0)<\/span>
    \n Frame<\/span>::<\/span>Simple<\/span>(<\/span>"OK"<\/span>.<\/span>to_string<\/span>(<\/span>)<\/span>)<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    \u5f15\u5165 futures \u4f9d\u8d56: cargo add futures\u3002
    \nFramed \u8ba9\u6211\u4eec\u7684 handle \u5faa\u73af\u53d8\u5f97\u5f02\u5e38\u6e05\u6670：\u4ece stream \u4e2d next() \u4e00\u4e2a Frame，\u5904\u7406\u5b83，\u7136\u540e\u5411 sink \u4e2d send() \u4e00\u4e2a\u54cd\u5e94 Frame\u3002<\/p>\n

    3. \u547d\u4ee4\u5206\u53d1\u4e0e\u6267\u884c<\/h3>\n

    \u73b0\u5728\u6211\u4eec\u6765\u5b9e\u73b0 apply_command \u65b9\u6cd5，\u8fd9\u662f\u6211\u4eec\u670d\u52a1\u5668\u7684\u903b\u8f91\u6838\u5fc3\u3002<\/p>\n

    \/\/ src\/connection.rs<\/span>
    \n\/\/ in impl Connection<\/span><\/p>\n

    async<\/span> fn<\/span> apply_command<\/span>(<\/span>&<\/span>self<\/span>,<\/span> cmd:<\/span> Command<\/span>)<\/span> -><\/span> Frame<\/span> {<\/span>
    \n use<\/span> Command<\/span>::<\/span>*<\/span>;<\/span>
    \n use<\/span> RedisValue<\/span>::<\/span>*<\/span>;<\/span><\/p>\n

    match<\/span> cmd {<\/span>
    \n Ping<\/span> =><\/span> Frame<\/span>::<\/span>Simple<\/span>(<\/span>"PONG"<\/span>.<\/span>to_string<\/span>(<\/span>)<\/span>)<\/span>,<\/span><\/p>\n

    Echo<\/span>(<\/span>msg)<\/span> =><\/span> Frame<\/span>::<\/span>Bulk<\/span>(<\/span>msg)<\/span>,<\/span><\/p>\n

    Set<\/span>(<\/span>key,<\/span> value)<\/span> =><\/span> {<\/span>
    \n self<\/span>.<\/span>db.<\/span>set<\/span>(<\/span>key,<\/span> String<\/span>(<\/span>value)<\/span>)<\/span>;<\/span>
    \n Frame<\/span>::<\/span>Simple<\/span>(<\/span>"OK"<\/span>.<\/span>to_string<\/span>(<\/span>)<\/span>)<\/span>
    \n }<\/span><\/p>\n

    Get<\/span>(<\/span>key)<\/span> =><\/span> {<\/span>
    \n if<\/span> let<\/span> Some<\/span>(<\/span>entry)<\/span> =<\/span> self<\/span>.<\/span>db.<\/span>get<\/span>(<\/span>&<\/span>key)<\/span> {<\/span>
    \n match<\/span> entry.<\/span>value<\/span>(<\/span>)<\/span> {<\/span>
    \n String<\/span>(<\/span>data)<\/span> =><\/span> Frame<\/span>::<\/span>Bulk<\/span>(<\/span>data.<\/span>clone<\/span>(<\/span>)<\/span>)<\/span>,<\/span>
    \n _ =><\/span> Frame<\/span>::<\/span>Error<\/span>(<\/span>"WRONGTYPE Operation against a key holding the wrong kind of value"<\/span>.<\/span>to_string<\/span>(<\/span>)<\/span>)<\/span>,<\/span>
    \n }<\/span>
    \n }<\/span> else<\/span> {<\/span>
    \n Frame<\/span>::<\/span>Null<\/span>
    \n }<\/span>
    \n }<\/span><\/p>\n

    LPush<\/span>(<\/span>key,<\/span> values)<\/span> =><\/span> {<\/span>
    \n let<\/span> mut<\/span> list =<\/span> self<\/span>.<\/span>db.<\/span>entry<\/span>(<\/span>key)<\/span>
    \n .<\/span>or_insert<\/span>(<\/span>List<\/span>(<\/span>VecDeque<\/span>::<\/span>new<\/span>(<\/span>)<\/span>)<\/span>)<\/span>;<\/span><\/p>\n

    match<\/span> list.<\/span>value_mut<\/span>(<\/span>)<\/span> {<\/span>
    \n List<\/span>(<\/span>deque)<\/span> =><\/span> {<\/span>
    \n for<\/span> value in<\/span> values.<\/span>into_iter<\/span>(<\/span>)<\/span>.<\/span>rev<\/span>(<\/span>)<\/span> {<\/span>
    \n deque.<\/span>push_front<\/span>(<\/span>value)<\/span>;<\/span>
    \n }<\/span>
    \n Frame<\/span>::<\/span>Integer<\/span>(<\/span>deque.<\/span>len<\/span>(<\/span>)<\/span> as<\/span> i64<\/span>)<\/span>
    \n }<\/span>
    \n _ =><\/span> Frame<\/span>::<\/span>Error<\/span>(<\/span>"WRONGTYPE …"<\/span>.<\/span>to_string<\/span>(<\/span>)<\/span>)<\/span>,<\/span>
    \n }<\/span>
    \n }<\/span><\/p>\n

    LPop<\/span>(<\/span>key)<\/span> =><\/span> {<\/span>
    \n if<\/span> let<\/span> Some<\/span>(<\/span>mut<\/span> entry)<\/span> =<\/span> self<\/span>.<\/span>db.<\/span>get_mut<\/span>(<\/span>&<\/span>key)<\/span> {<\/span>
    \n match<\/span> entry.<\/span>value_mut<\/span>(<\/span>)<\/span> {<\/span>
    \n List<\/span>(<\/span>deque)<\/span> =><\/span> {<\/span>
    \n deque.<\/span>pop_front<\/span>(<\/span>)<\/span>
    \n .<\/span>map<\/span>(<\/span>Frame<\/span>::<\/span>Bulk<\/span>)<\/span>
    \n .<\/span>unwrap_or<\/span>(<\/span>Frame<\/span>::<\/span>Null<\/span>)<\/span>
    \n }<\/span>
    \n _ =><\/span> Frame<\/span>::<\/span>Error<\/span>(<\/span>"WRONGTYPE …"<\/span>.<\/span>to_string<\/span>(<\/span>)<\/span>)<\/span>,<\/span>
    \n }<\/span>
    \n }<\/span> else<\/span> {<\/span>
    \n Frame<\/span>::<\/span>Null<\/span>
    \n }<\/span>
    \n }<\/span><\/p>\n

    \/\/ … \u5b9e\u73b0\u5176\u4ed6\u6240\u6709\u547d\u4ee4 …<\/span><\/p>\n

    Unknown<\/span>(<\/span>name)<\/span> =><\/span> {<\/span>
    \n Frame<\/span>::<\/span>Error<\/span>(<\/span>format!<\/span>(<\/span>"ERR unknown command `{}`"<\/span>,<\/span> name)<\/span>)<\/span>
    \n }<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

    \u6ce8\u610f：\u4e0a\u9762\u7684\u4ee3\u7801\u9700\u8981\u6211\u4eec\u5728 Db (\u6216\u76f4\u63a5\u5728 DashMap \u4e0a) \u5b9e\u73b0\u5bf9\u5e94\u7684 get, set \u7b49\u65b9\u6cd5\u3002\u4f8b\u5982:<\/p>\n

    \/\/ src\/db.rs<\/span>
    \n\/\/ in impl Db<\/span><\/p>\n

    pub<\/span> fn<\/span> set<\/span>(<\/span>&<\/span>self<\/span>,<\/span> key:<\/span> String<\/span>,<\/span> value:<\/span> RedisValue<\/span>)<\/span> {<\/span>
    \n self<\/span>.<\/span>entries.<\/span>insert<\/span>(<\/span>key,<\/span> value)<\/span>;<\/span>
    \n}<\/span><\/p>\n

    pub<\/span> fn<\/span> get<\/span>(<\/span>&<\/span>self<\/span>,<\/span> key:<\/span> &<\/span>str<\/span>)<\/span> -><\/span> Option<\/span><<\/span>dashmap::<\/span>mapref::<\/span>one::<\/span><\/span>Ref<\/span><<\/span>String<\/span>,<\/span> RedisValue<\/span>>><\/span> {<\/span>
    \n self<\/span>.<\/span>entries.<\/span>get<\/span>(<\/span>key)<\/span>
    \n}<\/span>
    \n\/\/ \u7b49\u7b49…<\/span><\/p>\n

    apply_command \u51fd\u6570\u6e05\u6670\u5730\u5c55\u793a\u4e86\u547d\u4ee4\u5904\u7406\u6d41\u7a0b：<\/p>\n

  • \u4f7f\u7528 match \u5339\u914d\u89e3\u6790\u597d\u7684 Command \u679a\u4e3e\u3002<\/li>\n
  • \u8c03\u7528 db \u6a21\u5757\u63d0\u4f9b\u7684\u65b9\u6cd5\u4e0e\u6570\u636e\u5b58\u50a8\u4ea4\u4e92\u3002<\/li>\n
  • \u6839\u636e\u64cd\u4f5c\u7ed3\u679c，\u6784\u5efa\u4e00\u4e2a\u7528\u4e8e\u54cd\u5e94\u7684 Frame（Simple, Bulk, Error, Null\u7b49）\u3002<\/li>\n

    \u8fd9\u4e2a\u8fc7\u7a0b\u662f async \u7684，\u56e0\u4e3a\u5728\u672a\u6765，\u67d0\u4e9b\u547d\u4ee4\u7684\u6267\u884c\u53ef\u80fd\u4e5f\u9700\u8981\u5f02\u6b65\u64cd\u4f5c（\u4f8b\u5982，\u5e26\u6709\u8d85\u65f6\u7684\u963b\u585e\u547d\u4ee4 BLPOP）\u3002<\/p>\n

    4. \u5b8c\u6574\u7684 main.rs<\/h3>\n

    \u73b0\u5728，\u6211\u4eec\u5c06\u6240\u6709\u90e8\u5206\u6574\u5408\u5728\u4e00\u8d77\u3002<\/p>\n

    \/\/ src\/main.rs<\/span>
    \nmod<\/span> command<\/span>;<\/span>
    \nmod<\/span> connection<\/span>;<\/span>
    \nmod<\/span> data<\/span>;<\/span>
    \nmod<\/span> db<\/span>;<\/span>
    \nmod<\/span> resp<\/span>;<\/span><\/p>\n

    use<\/span> connection::<\/span><\/span>Connection<\/span>;<\/span>
    \nuse<\/span> db::<\/span><\/span>Db<\/span>;<\/span>
    \nuse<\/span> tokio::<\/span>net::<\/span><\/span>TcpListener<\/span>;<\/span>
    \nuse<\/span> tokio::<\/span><\/span>signal;<\/span><\/p>\n

    #[tokio::main]<\/span>
    \nasync<\/span> fn<\/span> main<\/span>(<\/span>)<\/span> -><\/span> anyhow::<\/span><\/span>Result<\/span><<\/span>(<\/span>)<\/span>><\/span> {<\/span>
    \n let<\/span> listener =<\/span> TcpListener<\/span>::<\/span>bind<\/span>(<\/span>"127.0.0.1:6379"<\/span>)<\/span>.<\/span>await<\/span>?<\/span>;<\/span>
    \n println!<\/span>(<\/span>"Mini-Redis is listening on port 6379"<\/span>)<\/span>;<\/span><\/p>\n

    let<\/span> db =<\/span> Db<\/span>::<\/span>new<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

    \/\/ \u7b49\u5f85 Ctrl+C \u4fe1\u53f7<\/span>
    \n let<\/span> shutdown =<\/span> signal::<\/span><\/span>ctrl_c<\/span>(<\/span>)<\/span>;<\/span>
    \n tokio::<\/span><\/span>pin!<\/span>(<\/span>shutdown)<\/span>;<\/span><\/p>\n

    loop<\/span> {<\/span>
    \n tokio::<\/span><\/span>select!<\/span> {<\/span>
    \n \/\/ \u7b49\u5f85\u65b0\u7684\u8fde\u63a5\u6216\u5173\u95ed\u4fe1\u53f7<\/span>
    \n res =<\/span> listener.<\/span>accept<\/span>(<\/span>)<\/span> =><\/span> {<\/span>
    \n let<\/span> (<\/span>socket,<\/span> _)<\/span> =<\/span> res?<\/span>;<\/span>
    \n let<\/span> db_clone =<\/span> db.<\/span>clone<\/span>(<\/span>)<\/span>;<\/span><\/p>\n

    println!<\/span>(<\/span>"Accepted new connection"<\/span>)<\/span>;<\/span>
    \n tokio::<\/span><\/span>spawn<\/span>(<\/span>async<\/span> move<\/span> {<\/span>
    \n let<\/span> mut<\/span> conn =<\/span> Connection<\/span>::<\/span>new<\/span>(<\/span>socket,<\/span> db_clone)<\/span>;<\/span>
    \n if<\/span> let<\/span> Err<\/span>(<\/span>e)<\/span> =<\/span> conn.<\/span>handle<\/span>(<\/span>)<\/span>.<\/span>await<\/span> {<\/span>
    \n eprintln!<\/span>(<\/span>"Connection error: {:?}"<\/span>,<\/span> e)<\/span>;<\/span>
    \n }<\/span>
    \n }<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n _ =<\/span> &<\/span>mut<\/span> shutdown =><\/span> {<\/span>
    \n \/\/ \u6536\u5230\u4e86\u5173\u95ed\u4fe1\u53f7<\/span>
    \n println!<\/span>(<\/span>"Shutting down server…"<\/span>)<\/span>;<\/span>
    \n break<\/span>;<\/span>
    \n }<\/span>
    \n }<\/span>
    \n }<\/span><\/p>\n

    Ok<\/span>(<\/span>(<\/span>)<\/span>)<\/span>
    \n}<\/span><\/p>\n

    \u8fd9\u4e2a main \u51fd\u6570\u5c55\u793a\u4e86 tokio \u7684\u53e6\u4e00\u4e2a\u5f3a\u5927\u529f\u80fd：tokio::select! \u5b8f\u3002\u5b83\u5141\u8bb8\u6211\u4eec\u540c\u65f6\u7b49\u5f85\u591a\u4e2a\u4e0d\u540c\u7c7b\u578b\u7684 Future，\u53ea\u8981\u5176\u4e2d\u4efb\u4f55\u4e00\u4e2a\u5b8c\u6210，select! \u5c31\u4f1a\u8fd4\u56de\u3002<\/p>\n

    \u5728\u8fd9\u91cc，\u6211\u4eec\u540c\u65f6\u7b49\u5f85 listener.accept()（\u65b0\u8fde\u63a5\u5230\u6765）\u548c signal::ctrl_c()（\u7528\u6237\u6309\u4e0b Ctrl+C）\u3002\u8fd9\u4f7f\u5f97\u6211\u4eec\u7684\u670d\u52a1\u5668\u53ef\u4ee5\u4f18\u96c5\u5730\u5173\u95ed\u3002<\/p>\n

    \u6d4b\u8bd5\u6211\u4eec\u7684\u670d\u52a1\u5668<\/h3>\n

    \u73b0\u5728，\u6240\u6709\u4ee3\u7801\u90fd\u5df2\u5c31\u4f4d\u3002\u7f16\u8bd1\u5e76\u8fd0\u884c\u4f60\u7684\u670d\u52a1\u5668：<\/p>\n

    cargo run<\/p>\n

    \u7136\u540e，\u6253\u5f00\u4e00\u4e2a\u65b0\u7684\u7ec8\u7aef，\u4f7f\u7528 redis-cli \u8fde\u63a5\u5e76\u6d4b\u8bd5\u5b83：<\/p>\n

    $ redis-cli
    \n127.0<\/span>.0.1:6379<\/span>><\/span> PING
    \nPONG
    \n127.0<\/span>.0.1:6379<\/span>><\/span> SET name "Rust"<\/span>
    \nOK
    \n127.0<\/span>.0.1:6379<\/span>><\/span> GET name
    \n"Rust"<\/span>
    \n127.0<\/span>.0.1:6379<\/span>><\/span> LPUSH mylist "hello"<\/span> "world"<\/span>
    \n(<\/span>integer)<\/span> 2<\/span>
    \n127.0<\/span>.0.1:6379<\/span>><\/span> RPOP mylist
    \n"hello"<\/span>
    \n127.0<\/span>.0.1:6379<\/span>><\/span> LPOP mylist
    \n"world"<\/span>
    \n127.0<\/span>.0.1:6379<\/span>><\/span> GET non_existent_key
    \n(<\/span>nil)<\/span><\/p>\n

    \u6210\u529f\u4e86！\u6211\u4eec\u7528 Rust \u548c tokio \u6784\u5efa\u4e86\u4e00\u4e2a\u529f\u80fd\u867d\u7b80\u4f46\u4e94\u810f\u4ff1\u5168\u3001\u652f\u6301\u9ad8\u5e76\u53d1\u7684 Redis \u670d\u52a1\u5668\u3002<\/p>\n

    \u9879\u76ee\u603b\u7ed3<\/h3>\n

    \u8fd9\u4e2a\u5b9e\u6218\u9879\u76ee\u662f\u4e00\u4e2a\u91cc\u7a0b\u7891\u3002\u6211\u4eec\u5c06\u5728\u771f\u5b9e\u4e16\u754c\u7684\u573a\u666f\u4e2d，\u7efc\u5408\u8fd0\u7528\u4e86\u7b2c\u4e8c\u5468\u5b66\u4e60\u7684\u6240\u6709\u6838\u5fc3\u6982\u5ff5：<\/p>\n

  • \u5e76\u53d1\u6a21\u578b：\u6211\u4eec\u9009\u62e9\u4e86\u57fa\u4e8e tokio \u7684\u5f02\u6b65\u4efb\u52a1\u6a21\u578b，\u800c\u4e0d\u662f\u4f20\u7edf\u7684\u6bcf\u8fde\u63a5\u4e00\u7ebf\u7a0b\u6a21\u578b，\u4ee5\u5b9e\u73b0\u9ad8\u5e76\u53d1\u3002\u6bcf\u4e2a\u8fde\u63a5\u90fd\u662f\u4e00\u4e2a\u8f7b\u91cf\u7684 async \u4efb\u52a1\u3002<\/li>\n
  • \u5171\u4eab\u72b6\u6001\u7ba1\u7406：\u901a\u8fc7 Arc<DashMap<…>>，\u6211\u4eec\u5b9e\u73b0\u4e86\u4e00\u4e2a\u9ad8\u6027\u80fd\u3001\u7ebf\u7a0b\u5b89\u5168\u7684\u5185\u5b58\u6570\u636e\u5e93，\u907f\u514d\u4e86\u7c97\u7c92\u5ea6\u9501\u5e26\u6765\u7684\u6027\u80fd\u74f6\u9888\u3002<\/li>\n
  • \u5f02\u6b65 I\/O：\u4f7f\u7528 tokio::net::TcpListener \u548c TcpStream，\u6240\u6709\u7684\u7f51\u7edc\u8bfb\u5199\u90fd\u662f\u975e\u963b\u585e\u7684，\u5145\u5206\u5229\u7528\u4e86 CPU \u8d44\u6e90\u3002<\/li>\n
  • \u6d41\u5904\u7406：\u901a\u8fc7 tokio_util::codec，\u6211\u4eec\u5c06\u590d\u6742\u7684\u5b57\u8282\u6d41\u89e3\u6790\u903b\u8f91\u62bd\u8c61\u4e3a\u6e05\u6670\u7684 Frame \u6536\u53d1，\u6781\u5927\u5730\u7b80\u5316\u4e86\u8fde\u63a5\u5904\u7406\u4ee3\u7801\u3002<\/li>\n
  • \u4efb\u52a1\u534f\u8c03：\u901a\u8fc7 tokio::select!，\u6211\u4eec\u5b9e\u73b0\u4e86\u4f18\u96c5\u7684\u670d\u52a1\u5668\u5173\u95ed\u903b\u8f91\u3002<\/li>\n

    \u8fd9\u4e2a\u9879\u76ee\u4e0d\u4ec5\u662f\u77e5\u8bc6\u7684\u7ec8\u70b9，\u66f4\u662f\u65b0\u7684\u8d77\u70b9\u3002\u4ee5\u6b64\u4e3a\u57fa\u7840，\u4f60\u53ef\u4ee5\u7ee7\u7eed\u6269\u5c55\u5b83\u7684\u529f\u80fd，\u4f8b\u5982：<\/p>\n

      \n
    • \u5b9e\u73b0\u66f4\u591a\u6570\u636e\u7c7b\u578b\u548c\u547d\u4ee4（\u5982 Sorted Sets, Bitmaps）\u3002<\/li>\n
    • \u6dfb\u52a0\u8fc7\u671f\u952e（EXPIRE）\u529f\u80fd，\u8fd9\u9700\u8981\u4e00\u4e2a\u540e\u53f0\u4efb\u52a1\u6765\u6e05\u7406\u8fc7\u671f\u952e\u3002<\/li>\n
    • \u5b9e\u73b0\u6301\u4e45\u5316（SAVE, BGSAVE），\u5c06\u5185\u5b58\u4e2d\u7684\u6570\u636e\u5feb\u7167\u5230\u78c1\u76d8\u3002<\/li>\n
    • \u5b9e\u73b0\u4e3b\u4ece\u590d\u5236\u3002<\/li>\n<\/ul>\n

      \u7b2c\u4e8c\u5468\u603b\u7ed3<\/h3>\n

      \u606d\u559c\u4f60\u5b8c\u6210\u4e86\u7b2c\u4e8c\u5468\u7684\u5b66\u4e60！\u8fd9\u662f\u5145\u6ee1\u6311\u6218\u4f46\u6536\u83b7\u6ee1\u6ee1\u7684\u4e00\u5468\u3002\u6211\u4eec\u4ece\u591a\u7ebf\u7a0b\u7684\u57fa\u7840\u6982\u5ff5\u51fa\u53d1，\u4e00\u8def\u63a2\u7d22\u4e86\u9501\u3001\u6d88\u606f\u4f20\u9012\u3001Future\u3001async\/await，\u6700\u7ec8\u6784\u5efa\u4e86\u4e00\u4e2a\u590d\u6742\u7684\u5e76\u53d1\u7f51\u7edc\u670d\u52a1\u3002<\/p>\n

      \u4f60\u73b0\u5728\u5df2\u7ecf\u638c\u63e1\u4e86 Rust \u4e2d\u4e24\u79cd\u6838\u5fc3\u7684\u5e76\u53d1\u8303\u5f0f：<\/p>\n

        \n
      • \u57fa\u4e8e\u7ebf\u7a0b\u548c\u5171\u4eab\u5185\u5b58\u7684\u5e76\u53d1：\u9002\u7528\u4e8e CPU \u5bc6\u96c6\u578b\u4efb\u52a1\u548c\u9700\u8981\u7cbe\u7ec6\u63a7\u5236\u5171\u4eab\u72b6\u6001\u7684\u573a\u666f\u3002<\/li>\n
      • \u57fa\u4e8e async\/await \u548c\u4e8b\u4ef6\u9a71\u52a8\u7684\u5e76\u53d1：\u9002\u7528\u4e8e I\/O \u5bc6\u96c6\u578b\u4efb\u52a1，\u80fd\u591f\u4ee5\u6781\u4f4e\u7684\u8d44\u6e90\u5f00\u9500\u5904\u7406\u6d77\u91cf\u5e76\u53d1\u3002<\/li>\n<\/ul>\n

        \u4f60\u5df2\u7ecf\u5177\u5907\u4e86\u7f16\u5199\u9ad8\u6027\u80fd\u3001\u9ad8\u5e76\u53d1\u3001\u9ad8\u53ef\u9760\u6027 Rust \u7a0b\u5e8f\u6240\u9700\u7684\u6838\u5fc3\u6280\u80fd\u3002\u5728\u63a5\u4e0b\u6765\u7684\u8bfe\u7a0b\u4e2d，\u6211\u4eec\u5c06\u7ee7\u7eed\u6df1\u5165 Rust \u7684\u9ad8\u7ea7\u7279\u6027，\u4f8b\u5982\u5143\u7f16\u7a0b\u3001\u751f\u6001\u7cfb\u7edf\u63a2\u7d22\u7b49，\u8ba9\u4f60\u6210\u4e3a\u66f4\u5168\u9762\u7684 Rust \u5f00\u53d1\u8005\u3002<\/p>\n

        \u601d\u8003\u9898<\/h3>\n
      • \u5728 Connection::handle \u65b9\u6cd5\u4e2d，\u6211\u4eec\u7684 while let Some(…) \u5faa\u73af\u4f1a\u5728\u5ba2\u6237\u7aef\u65ad\u5f00\u8fde\u63a5\u65f6\u81ea\u52a8\u7ed3\u675f\u3002\u8bf7\u89e3\u91ca\u8fd9\u662f\u4e3a\u4ec0\u4e48\u3002（\u63d0\u793a：Framed \u548c Stream \u7684\u884c\u4e3a）\u3002<\/li>\n
      • \u6211\u4eec\u7684 apply_command \u65b9\u6cd5\u76ee\u524d\u662f\u540c\u6b65\u7684（\u867d\u7136\u5b83\u5728 async fn handle \u4e2d\u88ab .await，\u4f46\u5176\u672c\u8eab\u4e0d\u5305\u542b .await）\u3002\u4f60\u80fd\u8bbe\u60f3\u4e00\u4e2a\u9700\u8981\u5c06 apply_command \u4e5f\u53d8\u6210 async \u7684\u573a\u666f\u5417？（\u4f8b\u5982，\u5b9e\u73b0\u4e00\u4e2a BLPOP \u547d\u4ee4，\u5b83\u4f1a\u963b\u585e\u7b49\u5f85\u5217\u8868\u975e\u7a7a）\u3002<\/li>\n
      • tokio::select! \u548c tokio::join! \u6709\u4ec0\u4e48\u533a\u522b？\u4e3a\u4ec0\u4e48\u6211\u4eec\u5728 main \u51fd\u6570\u4e2d\u4f7f\u7528 select! \u800c\u4e0d\u662f join! \u6765\u5904\u7406\u76d1\u542c\u548c\u5173\u95ed\u4fe1\u53f7？<\/li>\n
      • \u6211\u4eec\u7684\u670d\u52a1\u5668\u76ee\u524d\u5bf9\u6bcf\u4e2a get \u8bf7\u6c42\u90fd\u4f1a\u514b\u9686 RedisValue \u4e2d\u7684\u6570\u636e\u3002\u8fd9\u5728\u503c\u5f88\u5927\u7684\u60c5\u51b5\u4e0b\u6027\u80fd\u4e0d\u4f73\u3002\u4f60\u80fd\u5426\u8bbe\u60f3\u4e00\u79cd\u65b9\u6cd5\u6765\u4f18\u5316 get \u547d\u4ee4，\u4f7f\u5176\u80fd\u201c\u501f\u7528\u201d\u6570\u636e\u800c\u4e0d\u662f\u514b\u9686？\u8fd9\u4f1a\u9047\u5230\u4ec0\u4e48\u56f0\u96be？（\u63d0\u793a：DashMap \u7684 Ref \u548c\u751f\u547d\u5468\u671f）\u3002<\/li>\n
      • \u5982\u679c\u73b0\u5728\u8981\u6c42\u4f60\u4e3a\u670d\u52a1\u5668\u6dfb\u52a0 TLS\/SSL \u652f\u6301，\u5b9e\u73b0 rediss:\/\/ \u534f\u8bae，\u4f60\u4f1a\u4ece\u54ea\u91cc\u5165\u624b？（\u63d0\u793a：tokio-rustls \u6216 tokio-native-tls）\u3002<\/li>\n

        \u5b9e\u8df5\u7ec3\u4e60<\/h3>\n
      • \u5b9e\u73b0\u66f4\u591a\u547d\u4ee4：\u4ece\u6211\u4eec\u5728\u7b2c\u4e00\u90e8\u5206\u5b9a\u4e49\u7684\u529f\u80fd\u5217\u8868\u4e2d，\u9009\u62e9\u5e76\u5b9e\u73b0 HSET, HGET, HGETALL \u8fd9\u51e0\u4e2a\u54c8\u5e0c\u547d\u4ee4\u3002<\/li>\n
      • \u6dfb\u52a0 INCR\/DECR \u547d\u4ee4：\u5b9e\u73b0 INCR \u548c DECR \u547d\u4ee4\u3002\u4f60\u9700\u8981\u5904\u7406\u503c\u4e0d\u662f\u6574\u6570\u3001\u6216\u8005\u952e\u4e0d\u5b58\u5728\u7b49\u60c5\u51b5\u3002\u8fd9\u4f1a\u8ba9\u4f60\u66f4\u6df1\u5165\u5730\u4f7f\u7528 DashMap \u7684\u539f\u5b50\u64cd\u4f5c\u3002<\/li>\n
      • \u5b8c\u5584\u9519\u8bef\u5904\u7406：\u76ee\u524d，\u5f53 Command::from_frame \u5931\u8d25\u65f6，\u8fde\u63a5\u4f1a\u4e2d\u65ad\u3002\u4fee\u6539 handle \u51fd\u6570，\u4f7f\u5176\u5728\u89e3\u6790\u547d\u4ee4\u5931\u8d25\u65f6\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u4e00\u4e2a RESP Error \u5e27，\u800c\u4e0d\u662f\u76f4\u63a5\u5173\u95ed\u8fde\u63a5\u3002<\/li>\n
      • \u5b9e\u73b0 EXPIRE（\u6311\u6218）：\u5b9e\u73b0 SET key value EX seconds \u529f\u80fd\u3002\u4f60\u9700\u8981\u4e00\u4e2a\u65b9\u6cd5\u6765\u5b58\u50a8\u952e\u7684\u8fc7\u671f\u65f6\u95f4，\u5e76\u8bbe\u8ba1\u4e00\u4e2a\u673a\u5236\u6765\u5904\u7406\u8fc7\u671f\u952e\u7684\u5220\u9664\u3002\u8fd9\u53ef\u80fd\u9700\u8981\u4e00\u4e2a\u989d\u5916\u7684\u540e\u53f0\u6e05\u7406\u4efb\u52a1\u3002<\/li>\n","protected":false},"excerpt":{"rendered":"

        2.10 \u7b80\u6613 Redis \u670d\u52a1\u5668\u5b9e\u6218（\u4e0b）：\u547d\u4ee4\u89e3\u6790\u4e0e\u5e76\u53d1\u5904\u7406，\u5b8c\u6574\u9879\u76ee\u5b9e\u73b0
        \n\u5f15\u8a00：\u8ba9\u670d\u52a1\u5668\u201c\u6d3b\u201d\u8d77\u6765
        \n\u5728\u4e0a\u4e00\u7ae0，\u6211\u4eec\u5df2\u7ecf\u4e3a\u6211\u4eec\u7684\u7b80\u6613 Redis \u670d\u52a1\u5668\u8bbe\u8ba1\u4e86\u84dd\u56fe，\u642d\u5efa\u4e86\u9aa8\u67b6\u3002\u6211\u4eec\u5b9a\u4e49\u4e86\u529f\u80fd\u8303\u56f4，\u9009\u62e9\u4e86\u5f02\u6b65\u67b6\u6784，\u8bbe\u8ba1\u4e86\u7ebf\u7a0b\u5b89\u5168\u7684\u6570\u636e\u5b58\u50a8，\u5e76\u5bf9 RESP \u534f\u8bae\u6709\u4e86\u521d\u6b65\u7684\u4e86\u89e3\u3002\u73b0\u5728，\u4e07\u4e8b\u4ff1\u5907，\u53ea\u6b20\u4e1c\u98ce\u3002
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