{"id":201366,"date":"2025-05-10T10:13:08","date_gmt":"2025-05-10T02:13:08","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201366\/"},"modified":"2025-05-10T10:13:08","modified_gmt":"2025-05-10T02:13:08","slug":"redis-protocol%e9%80%9a%e4%bf%a1%e5%8d%8f%e8%ae%ae%e5%8f%8a%e4%bd%bf%e7%94%a8%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201366\/","title":{"rendered":"redis\u00a0protocol\u901a\u4fe1\u534f\u8bae\u53ca\u4f7f\u7528\u8be6\u89e3"},"content":{"rendered":"

<\/b> <\/p>\n

redis protocol\u901a\u4fe1\u534f\u8bae\u53ca\u4f7f\u7528\u8be6\u89e3<\/h1>\n

<\/i>\u6536\u85cf<\/span> <\/p>\n

\u672c\u7bc7\u6587\u7ae0\u7ed9\u5927\u5bb6\u5206\u4eab\u300aredis protocol\u901a\u4fe1\u534f\u8bae\u53ca\u4f7f\u7528\u8be6\u89e3\u300b\uff0c\u8986\u76d6\u4e86\u6570\u636e\u5e93\u7684\u5e38\u89c1\u57fa\u7840\u77e5\u8bc6\uff0c\u5176\u5b9e\u4e00\u4e2a\u8bed\u8a00\u7684\u5168\u90e8\u77e5\u8bc6\u70b9\u4e00\u7bc7\u6587\u7ae0\u662f\u4e0d\u53ef\u80fd\u8bf4\u5b8c\u7684\uff0c\u4f46\u5e0c\u671b\u901a\u8fc7\u8fd9\u4e9b\u95ee\u9898\uff0c\u8ba9\u8bfb\u8005\u5bf9\u81ea\u5df1\u7684\u638c\u63e1\u7a0b\u5ea6\u6709\u4e00\u5b9a\u7684\u8ba4\u8bc6(B \u6570)\uff0c\u4ece\u800c\u5f25\u8865\u81ea\u5df1\u7684\u4e0d\u8db3\uff0c\u66f4\u597d\u7684\u638c\u63e1\u5b83\u3002<\/p>\n

\u7b80\u4ecb<\/h2>\n

redis\u662f\u4e00\u4e2a\u975e\u5e38\u4f18\u79c0\u7684\u8f6f\u4ef6\uff0c\u5b83\u53ef\u4ee5\u7528\u4f5c\u5185\u5b58\u6570\u636e\u5e93\u6216\u8005\u7f13\u5b58\u3002\u56e0\u4e3a\u4ed6\u7684\u4f18\u79c0\u6027\u80fd\uff0credis\u88ab\u5e94\u7528\u5728\u5f88\u591a\u573a\u5408\u4e2d\u3002<\/p>\n

redis\u662f\u4e00\u4e2a\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7aef\u7684\u6a21\u5f0f\uff0c\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7aef\u662f\u901a\u8fc7TCP\u534f\u8bae\u8fdb\u884c\u8fde\u63a5\u7684\uff0c\u5ba2\u6237\u7aef\u5c06\u8bf7\u6c42\u6570\u636e\u53d1\u9001\u5230\u670d\u52a1\u5668\u7aef\uff0c\u670d\u52a1\u5668\u7aef\u5c06\u8bf7\u6c42\u8fd4\u56de\u7ed9\u5ba2\u6237\u7aef\u3002\u8fd9\u6837\u4e00\u4e2a\u8bf7\u6c42\u6d41\u7a0b\u5c31\u5b8c\u6210\u4e86\u3002<\/p>\n

\u5f53\u7136\u5728\u6700\u5f00\u59cb\u7684\u65f6\u5019\uff0c\u56e0\u4e3a\u7528\u7684\u4eba\u5f88\u5c11\uff0c\u7cfb\u7edf\u8fd8\u4e0d\u591f\u7a33\u5b9a\uff0c\u901a\u8fc7TCP\u534f\u8bae\u4f20\u8f93\u7684\u6570\u636e\u4e0d\u89c4\u8303\u7684\u3002\u4f46\u662f\u5f53\u7528\u7684\u4eba\u8d8a\u6765\u8d8a\u591a\uff0c\u5c24\u5176\u662f\u5e0c\u671b\u5f00\u53d1\u9002\u7528\u4e8e\u4e0d\u540c\u8bed\u8a00\u548c\u5e73\u53f0\u7684redis\u5ba2\u6237\u7aef\u7684\u65f6\u5019\uff0c\u5c31\u8981\u8003\u8651\u5230\u517c\u5bb9\u6027\u7684\u95ee\u9898\u4e86\u3002<\/p>\n

\u8fd9\u65f6\u5019\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7aef\u5c31\u9700\u8981\u4e00\u4e2a\u7edf\u4e00\u7684\u4ea4\u4e92\u534f\u8bae\uff0c\u5bf9\u4e8eredis\u6765\u8bf4\u8fd9\u4e2a\u901a\u7528\u7684\u4ea4\u4e92\u534f\u8bae\u5c31\u53eb\u505aRedis serialization protocol(RESP)\u3002<\/p>\n

RESP\u662f\u5728Redis 1.2\u7248\u672c\u4e2d\u5f15\u5165\u7684\uff0c\u5e76\u5728Redis 2.0\u4e2d\u6210\u4e3a\u4e86\u4e0e Redis \u670d\u52a1\u5668\u901a\u4fe1\u7684\u6807\u51c6\u65b9\u5f0f\u3002<\/p>\n

\u8fd9\u5c31\u662f\u8bf4\uff0c\u4eceRedis 2.0\u4e4b\u540e\uff0c\u5c31\u53ef\u4ee5\u57fa\u4e8eredis protocol\u534f\u8bae\u5f00\u53d1\u51fa\u81ea\u5df1\u7684redis\u5ba2\u6237\u7aef\u4e86\u3002<\/p>\n

redis\u7684\u9ad8\u7ea7\u7528\u6cd5<\/h2>\n

\u4e00\u822c\u6765\u8bf4\uff0credis\u7684\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u7aef\u7ec4\u6210\u7684\u662f\u4e00\u4e2a\u8bf7\u6c42-\u54cd\u5e94\u7684\u6a21\u5f0f\uff0c\u4e5f\u5c31\u662f\u8bf4\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u7aef\u53d1\u9001\u8bf7\u6c42\uff0c\u7136\u540e\u5f97\u5230\u670d\u52a1\u5668\u7aef\u7684\u54cd\u5e94\u7ed3\u679c\u3002<\/p>\n

\u8bf7\u6c42\u548c\u54cd\u5e94\u662fredis\u4e2d\u6700\u7b80\u5355\u7684\u7528\u6cd5\u3002\u719f\u6089redis\u7684\u670b\u53cb\u53ef\u80fd\u4f1a\u60f3\u5230\u4e86\u4e24\u4e2aredis\u7684\u9ad8\u7ea7\u7528\u6cd5\uff0c\u8fd9\u4e24\u4e2a\u7528\u6cd5\u5e76\u4e0d\u662f\u4f20\u7edf\u610f\u4e49\u4e0a\u7684\u8bf7\u6c42-\u54cd\u5e94\u6a21\u5f0f\u3002<\/p>\n

\u5230\u5e95\u662f\u54ea\u4e24\u79cd\u7528\u6cd5\u5462?<\/p>\n

\u7b2c\u4e00\u79cd\u5c31\u662fredis\u652f\u6301pipline\uff0c\u4e5f\u5c31\u662f\u7ba1\u9053\u64cd\u4f5c\uff0c\u7ba1\u9053\u7684\u597d\u5904\u5c31\u662fredis\u5ba2\u6237\u7aef\u53ef\u4ee5\u4e00\u6b21\u6027\u5411\u670d\u52a1\u5668\u7aef\u53d1\u9001\u591a\u6761\u547d\u4ee4\uff0c\u7136\u540e\u7b49\u5f85\u670d\u52a1\u5668\u7aef\u7684\u8fd4\u56de\u3002<\/p>\n

\u7b2c\u4e8c\u79cdredis\u8fd8\u652f\u6301Pub\/Sub\uff0c\u4e5f\u5c31\u662f\u5e7f\u64ad\u6a21\u578b\uff0c\u5728\u8fd9\u4e00\u79cd\u60c5\u51b5\u4e0b\uff0c\u5c31\u4e0d\u662f\u8bf7\u6c42\u548c\u54cd\u5e94\u7684\u6a21\u5f0f\u4e86\uff0c\u5728Pub\/Sub\u4e0b\uff0c\u5207\u6362\u6210\u4e86\u670d\u52a1\u5668\u7aef\u63a8\u9001\u7684\u6a21\u5f0f\u3002<\/p>\n

Redis\u4e2d\u7684pipline<\/h3>\n

\u4e3a\u4ec0\u4e48\u8981\u7528pipline\u5462\uff1f<\/p>\n

\u56e0\u4e3aredis\u662f\u4e00\u4e2a\u5178\u578b\u7684\u8bf7\u6c42\u54cd\u5e94\u6a21\u5f0f\uff0c\u6211\u4eec\u6765\u4e3e\u4e2a\u5e38\u89c1\u7684incr\u547d\u4ee4\u7684\u4f8b\u5b50\uff1a<\/p>\n

Client: INCR X Server: 1 Client: INCR X Server: 2 Client: INCR X Server: 3 Client: INCR X Server: 4<\/p>\n

\u4e8b\u5b9e\u4e0a\u5ba2\u6237\u7aef\u53ea\u60f3\u5f97\u5230\u6700\u7ec8\u7684\u7ed3\u679c\uff0c\u4f46\u662f\u6bcf\u6b21\u5ba2\u6237\u7aef\u90fd\u9700\u8981\u7b49\u5f85\u670d\u52a1\u5668\u7aef\u8fd4\u56de\u7ed3\u679c\u4e4b\u540e\uff0c\u624d\u80fd\u53d1\u9001\u4e0b\u4e00\u6b21\u7684\u547d\u4ee4\u3002\u8fd9\u6837\u5c31\u4f1a\u5bfc\u81f4\u4e00\u4e2a\u53eb\u505aRTT(Round Trip Time)\u7684\u65f6\u95f4\u6d6a\u8d39\u3002<\/p>\n

\u867d\u7136\u6bcf\u6b21RTT\u7684\u65f6\u95f4\u4e0d\u957f\uff0c\u4f46\u662f\u7d2f\u8ba1\u8d77\u6765\u4e5f\u662f\u4e00\u4e2a\u975e\u5e38\u5ba2\u89c2\u7684\u6570\u5b57\u3002<\/p>\n

\u90a3\u4e48\u53ef\u4e0d\u53ef\u4ee5\u5c06\u6240\u6709\u7684\u5ba2\u6237\u7aef\u547d\u4ee4\u653e\u5728\u4e00\u8d77\u53d1\u9001\u7ed9\u670d\u52a1\u5668\u5462? \u8fd9\u4e2a\u4f18\u5316\u5c31\u53eb\u505aPipeline\u3002<\/p>\n

piepline\u7684\u610f\u601d\u5c31\u662f\u5ba2\u6237\u7aef\u53ef\u4ee5\u5728\u6ca1\u6709\u6536\u5230\u670d\u52a1\u5668\u7aef\u8fd4\u56de\u7684\u65f6\u5019\u7ee7\u7eed\u5411\u670d\u52a1\u5668\u7aef\u53d1\u9001\u547d\u4ee4\u3002<\/p>\n

\u4e0a\u9762\u7684\u547d\u4ee4\u53ef\u4ee5\u7528pipline\u8fdb\u884c\u5982\u4e0b\u6539\u5199\uff1a<\/p>\n

(printf \"INCR X\\r\\nINCR X\\r\\nINCR X\\r\\nINCR X\\r\\n\"; sleep 1) | nc localhost 6379\n:1\n:2\n:3\n:4\n<\/pre>\n
\u56e0\u4e3aredis\u670d\u52a1\u5668\u652f\u6301TCP\u534f\u8bae\u8fdb\u884c\u8fde\u63a5\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u7528nc\u8fde\u5230redis\u670d\u52a1\u5668\u4e2d\u6267\u884c\u547d\u4ee4\u3002<\/p>\n
\u5728\u4f7f\u7528pipline\u7684\u65f6\u5019\u6709\u4e00\u70b9\u8981\u6ce8\u610f\uff0c\u56e0\u4e3aredis\u670d\u52a1\u5668\u4f1a\u5c06\u8bf7\u6c42\u7684\u7ed3\u679c\u7f13\u5b58\u5728\u670d\u52a1\u5668\u7aef\uff0c\u7b49\u5230pipline\u4e2d\u7684\u6240\u6709\u547d\u4ee4\u90fd\u6267\u884c\u5b8c\u6bd5\u4e4b\u540e\u518d\u7edf\u4e00\u8fd4\u56de\uff0c\u6240\u4ee5\u5982\u679c\u670d\u52a1\u5668\u7aef\u8fd4\u56de\u7684\u6570\u636e\u6bd4\u8f83\u591a\u7684\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u8003\u8651\u5185\u5b58\u5360\u7528\u7684\u95ee\u9898\u3002<\/p>\n
\u90a3\u4e48pipline\u4ec5\u4ec5\u662f\u4e3a\u4e86\u51cf\u5c11RTT\u5417\uff1f<\/p>\n
\u719f\u6089\u64cd\u4f5c\u7cfb\u7edf\u7684\u670b\u53cb\u53ef\u80fd\u6709\u542c\u8bf4\u8fc7\u7528\u6237\u7a7a\u95f4\u548c\u64cd\u4f5c\u7cfb\u7edf\u7a7a\u95f4\u7684\u6982\u5ff5\uff0c\u4ece\u7528\u6237\u8f93\u5165\u8bfb\u53d6\u6570\u636e\u7136\u540e\u518d\u5199\u5165\u5230\u7cfb\u7edf\u7a7a\u95f4\u4e2d\uff0c\u8fd9\u91cc\u6d89\u53ca\u5230\u4e86\u4e00\u4e2a\u7528\u6237\u7a7a\u95f4\u7684\u5207\u6362\uff0c\u5728IO\u64cd\u4f5c\u4e2d\uff0c\u8fd9\u79cd\u7a7a\u95f4\u5207\u6362\u6216\u8005\u62f7\u8d1d\u662f\u6bd4\u8f83\u8017\u65f6\u7684\uff0c\u5982\u679c\u9891\u7e41\u7684\u8fdb\u884c\u8bf7\u6c42\u548c\u54cd\u5e94\uff0c\u5c31\u4f1a\u9020\u6210\u8fd9\u79cd\u9891\u7e41\u7684\u7a7a\u95f4\u5207\u6362\uff0c\u4ece\u800c\u964d\u4f4e\u4e86\u7cfb\u7edf\u7684\u6548\u7387\u3002<\/p>\n
\u4f7f\u7528pipline\u53ef\u4ee5\u4e00\u6b21\u6027\u53d1\u9001\u591a\u6761\u6307\u4ee4\uff0c\u4ece\u800c\u6709\u6548\u907f\u514d\u7a7a\u95f4\u7684\u5207\u6362\u884c\u4e3a\u3002<\/p>\n
Redis\u4e2d\u7684Pub\/Sub<\/h3>\n
\u548cPub\/Sub\u76f8\u5173\u7684\u547d\u4ee4\u662fSUBSCRIBE, UNSUBSCRIBE \u548c PUBLISH\u3002<\/p>\n
\u4e3a\u4ec0\u4e48\u8981\u7528Pub\/Sub\u5462\uff1f\u5176\u4e3b\u8981\u7684\u76ee\u7684\u5c31\u662f\u89e3\u8026\uff0c\u5728Pub\/Sub\u4e2d\u6d88\u606f\u53d1\u9001\u65b9\u4e0d\u9700\u8981\u77e5\u9053\u5177\u4f53\u7684\u63a5\u6536\u65b9\u7684\u5730\u5740\uff0c\u540c\u6837\u7684\u5bf9\u4e8e\u6d88\u606f\u63a5\u6536\u65b9\u6765\u8bf4\uff0c\u4e5f\u4e0d\u9700\u8981\u77e5\u9053\u5177\u4f53\u7684\u6d88\u606f\u53d1\u9001\u65b9\u7684\u5730\u5740\u3002\u4ed6\u4eec\u53ea\u9700\u8981\u77e5\u9053\u5173\u8054\u7684\u4e3b\u9898\u5373\u53ef\u3002<\/p>\n
subscribe\u548cpublish\u7684\u547d\u4ee4\u6bd4\u8f83\u7b80\u5355\uff0c\u6211\u4eec\u4e3e\u4e00\u4e2a\u4f8b\u5b50\uff0c\u9996\u5148\u662f\u5ba2\u6237\u7aefsubscribe topic\uff1a<\/p>\n
redis-cli -h 127.0.0.1\n127.0.0.1:6379> subscribe topic\nReading messages... (press Ctrl-C to quit)\n1) \"subscribe\"\n2) \"topic\"\n3) (integer) 1\n<\/pre>\n
\u7136\u540e\u5728\u53e6\u5916\u4e00\u4e2a\u7ec8\u7aef\uff0c\u8c03\u7528publish\u547d\u4ee4\uff1a<\/p>\n
redis-cli -h 127.0.0.1\n127.0.0.1:6379> publish topic \"what is your name?\"\n(integer) 1\n<\/pre>\n
\u53ef\u4ee5\u770b\u5230\u5ba2\u6237\u7aef\u4f1a\u6536\u5230\u4e0b\u9762\u7684\u6d88\u606f\uff1a<\/p>\n
1) \"message\"\n2) \"topic\"\n3) \"what is your name?\"\n<\/pre>\n
RESP protocol<\/h2>\n
RESP\u534f\u8bae\u67095\u79cd\u7c7b\u578b\uff0c\u5206\u522b\u662fimple Strings, Errors, Integers, Bulk Strings \u548c Arrays\u3002<\/p>\n
\u4e0d\u540c\u7684\u7c7b\u578b\u4ee5\u6d88\u606f\u4e2d\u7684\u7b2c\u4e00\u4e2abyte\u8fdb\u884c\u533a\u5206\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/th>\n\u7b2c\u4e00\u4e2abyte<\/th>\n<\/tr>\n
Simple Strings<\/td>\n+<\/td>\n<\/tr>\n
Errors<\/td>\n–<\/td>\n<\/tr>\n
Integers<\/td>\n:<\/td>\n<\/tr>\n
Bulk Strings<\/td>\n$<\/td>\n<\/tr>\n
Arrays<\/td>\n*<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
protocol\u4e2d\u4e0d\u540c\u7684\u90e8\u5206\u4ee5 “\\r\\n” (CRLF)\u6765\u8fdb\u884c\u533a\u522b\u3002<\/p>\n
Simple Strings<\/h3>\n
Simple Strings\u7684\u610f\u601d\u662f\u7b80\u5355\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n
\u901a\u5e38\u7528\u5728\u670d\u52a1\u5668\u7aef\u7684\u8fd4\u56de\u4e2d\uff0c\u8fd9\u79cd\u6d88\u606f\u7684\u683c\u5f0f\u5c31\u662f”+”\u52a0\u4e0a\u6587\u672c\u6d88\u606f\uff0c\u6700\u540e\u4ee5”\\r\\n”\u7ed3\u5c3e\u3002<\/p>\n
\u6bd4\u5982\u670d\u52a1\u5668\u7aef\u8fd4\u56deOK,\u90a3\u4e48\u5bf9\u5e94\u7684\u6d88\u606f\u5c31\u662f\uff1a<\/p>\n
\"+OK\\r\\n\"\n<\/pre>\n
\u4e0a\u9762\u7684\u6d88\u606f\u662f\u4e00\u4e2a\u975e\u4e8c\u8fdb\u5236\u5b89\u5168\u7684\u6d88\u606f\uff0c\u5982\u679c\u60f3\u8981\u53d1\u9001\u4e8c\u8fdb\u5236\u5b89\u5168\u7684\u6d88\u606f\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528Bulk Strings\u3002<\/p>\n
\u4ec0\u4e48\u662f\u975e\u4e8c\u8fdb\u5236\u5b89\u5168\u7684\u6d88\u606f\u5462\uff1f\u5bf9\u4e8eSimple Strings\u6765\u8bf4\uff0c\u56e0\u4e3a\u6d88\u606f\u662f\u4ee5”\\r\\n”\u7ed3\u5c3e\uff0c\u6240\u4ee5\u6d88\u606f\u4e2d\u95f4\u4e0d\u80fd\u5305\u542b”\\r\\n”\u8fd9\u4e24\u4e2a\u7279\u6b8a\u5b57\u7b26\uff0c\u5426\u5219\u5c31\u4f1a\u4ea7\u751f\u9519\u8bef\u7684\u542b\u4e49\u3002<\/p>\n
Bulk Strings<\/h3>\n
Bulk Strings\u662f\u4e8c\u8fdb\u5236\u5b89\u5168\u7684\u3002\u8fd9\u662f\u56e0\u4e3aBulk Strings\u5305\u542b\u4e86\u4e00\u4e2a\u5b57\u7b26\u957f\u5ea6\u5b57\u6bb5\uff0c\u56e0\u4e3a\u662f\u6839\u636e\u957f\u5ea6\u6765\u5224\u65ad\u5b57\u7b26\u957f\u5ea6\u7684\uff0c\u6240\u4ee5\u5e76\u4e0d\u5b58\u5728\u6839\u636e\u5b57\u7b26\u4e2d\u67d0\u4e2a\u7279\u5b9a\u5b57\u7b26\u6765\u5224\u65ad\u662f\u5426\u5b57\u7b26\u7ed3\u675f\u7684\u7f3a\u70b9\u3002<\/p>\n
\u5177\u4f53\u800c\u8a00Bulk Strings\u7684\u7ed3\u6784\u662f”$”+\u5b57\u7b26\u4e32\u957f\u5ea6+”\\r\\n”+\u5b57\u7b26\u4e32+”\\r\\n”\u3002<\/p>\n
\u4ee5OK\u4e3a\u4f8b\uff0c\u5982\u679c\u4ee5Bulk Strings\u6765\u8868\u793a\uff0c\u5219\u5982\u4e0b\u6240\u793a:<\/p>\n
\"$2\\r\\nok\\r\\n\"\n<\/pre>\n
Bulk Strings\u8fd8\u53ef\u4ee5\u5305\u542b\u7a7a\u5b57\u7b26\u4e32\uff1a<\/p>\n
\"$0\\r\\n\\r\\n\"\n<\/pre>\n
\u5f53\u7136\u8fd8\u53ef\u4ee5\u8868\u793a\u4e0d\u5b58\u5728\u7684Null\u503c\uff1a<\/p>\n
\"$-1\\r\\n\"\n<\/pre>\n
RESP Integers<\/h3>\n
\u8fd9\u662fredis\u4e2d\u7684\u6574\u6570\u8868\u793a\uff0c\u5177\u4f53\u7684\u683c\u5f0f\u662f”:”+\u6574\u6570+”\\r\\n”\u3002<\/p>\n
\u6bd4\u598218\u8fd9\u4e2a\u6574\u6570\u5c31\u53ef\u4ee5\u7528\u4e0b\u9762\u7684\u683c\u5f0f\u6765\u8868\u793a\uff1a<\/p>\n
\":18\\r\\n\"\n<\/pre>\n
RESP Arrays<\/h3>\n
redis\u7684\u591a\u4e2a\u547d\u4ee4\u53ef\u4ee5\u4ee5array\u6765\u8868\u793a\uff0c\u670d\u52a1\u5668\u7aef\u8fd4\u56de\u7684\u591a\u4e2a\u503c\u4e5f\u53ef\u4ee5\u7528arrays\u6765\u8868\u793a\u3002<\/p>\n
RESP Arrays\u7684\u683c\u5f0f\u662f”*”+\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u4e2a\u6570+\u5176\u4ed6\u7c7b\u4f3c\u7684\u6570\u636e\u3002<\/p>\n
\u6240\u4ee5RESP Arrays\u662f\u4e00\u4e2a\u590d\u5408\u7ed3\u6784\u7684\u6570\u636e\u3002\u6bd4\u5982\u4e00\u4e2a\u6570\u7ec4\u4e2d\u5305\u542b\u4e86\u4e24\u4e2aBulk Strings:”redis”,”server”\u5219\u53ef\u4ee5\u7528\u4e0b\u9762\u7684\u683c\u5f0f\u6765\u8868\u793a\uff1a<\/p>\n
\"*2\\r\\n$5\\r\\nredis\\r\\n$6\\r\\nserver\\r\\n\"\n<\/pre>\n
RESP Arrays\u4e2d\u7684\u539f\u59cb\u4e0d\u4ec5\u53ef\u4ee5\u4f7f\u7528\u4e0d\u540c\u7c7b\u578b\uff0c\u8fd8\u80fd\u5305\u542bRESP Arrays\uff0c\u4e5f\u5c31\u662farray\u7684\u5d4c\u5957\uff1a<\/p>\n
\"*3\\r\\n$5\\r\\nredis\\r\\n$6\\r\\nserver\\r\\n*1\\r\\n$4\\r\\ngood\\r\\n\"\n<\/pre>\n
\u4e3a\u4e86\u65b9\u4fbf\u89c2\u5bdf\uff0c\u6211\u4eec\u5c06\u4e0a\u9762\u7684\u6d88\u606f\u683c\u5f0f\u4e00\u4e0b\uff1a<\/p>\n
\"*3\\r\\n\n$5\\r\\nredis\\r\\n\n$6\\r\\nserver\\r\\n\n*1\\r\\n\n$4\\r\\ngood\\r\\n\"\n<\/pre>\n
\u4e0a\u9762\u7684\u6d88\u606f\u662f\u4e00\u4e2a\u5305\u542b\u4e09\u4e2a\u5143\u7d20\u7684\u6570\u7ec4\uff0c\u524d\u9762\u4e24\u4e2a\u5143\u7d20\u662fBulk Strings\uff0c\u6700\u540e\u4e00\u4e2a\u662f\u5305\u542b\u4e00\u4e2a\u5143\u7d20\u7684\u6570\u7ec4\u3002<\/p>\n
RESP Errors<\/h3>\n
\u6700\u540e\uff0cRESP\u8fd8\u53ef\u4ee5\u8868\u793a\u9519\u8bef\u6d88\u606f\u3002RESP Errors\u7684\u6d88\u606f\u683c\u5f0f\u662f”-“+\u5b57\u7b26\u4e32\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n
\"-Err something wrong\\r\\n\"\n<\/pre>\n
\u4e00\u822c\u60c5\u51b5\u4e0b\uff0c”-“\u540e\u9762\u7684\u7b2c\u4e00\u4e2a\u5355\u8bcd\u8868\u793a\u7684\u662f\u9519\u8bef\u7c7b\u578b\uff0c\u4f46\u662f\u8fd9\u53ea\u662f\u4e00\u4e2a\u7ea6\u5b9a\u4fd7\u6210\u7684\u89c4\u5b9a\uff0c\u5e76\u4e0d\u662fRESP\u534f\u8bae\u4e2d\u7684\u5f3a\u5236\u8981\u6c42\u3002<\/p>\n
\u53e6\u5916\uff0c\u7ecf\u8fc7\u5bf9\u6bd4\uff0c\u5927\u5bb6\u53ef\u80fd\u4f1a\u53d1\u73b0RESP Errors\u548cSimple Strings\u662f\u6d88\u606f\u683c\u5f0f\u662f\u5dee\u4e0d\u591a\u7684\u3002<\/p>\n
\u8fd9\u79cd\u5bf9\u4e0d\u540c\u6d88\u606f\u7c7b\u578b\u7684\u5904\u7406\u662f\u5728\u5ba2\u6237\u7aef\u8fdb\u884c\u533a\u5206\u7684\u3002<\/p>\n
Inline commands<\/h2>\n
\u5982\u679c\u5b8c\u5168\u6309RESP\u534f\u8bae\u7684\u8981\u6c42\uff0c\u5f53\u6211\u4eec\u8fde\u63a5\u5230\u670d\u52a1\u5668\u7aef\u7684\u65f6\u5019\u9700\u8981\u5305\u542bRESP\u4e2d\u5b9a\u4e49\u6d88\u606f\u7684\u6240\u6709\u683c\u5f0f\uff0c\u4f46\u662f\u8fd9\u4e9b\u6d88\u606f\u4e2d\u5305\u542b\u4e86\u989d\u5916\u7684\u6d88\u606f\u7c7b\u578b\u548c\u56de\u8f66\u6362\u884c\u7b26\uff0c\u6240\u4ee5\u76f4\u63a5\u4f7f\u7528\u534f\u8bae\u6765\u6267\u884c\u7684\u8bdd\u4f1a\u6bd4\u8f83\u56f0\u60d1\u3002<\/p>\n
\u4e8e\u662fredis\u8fd8\u63d0\u4f9b\u4e00\u4e9b\u5185\u8054\u7684\u547d\u4ee4\uff0c\u4e5f\u5c31\u662f\u534f\u8bae\u547d\u4ee4\u7684\u7cbe\u7b80\u7248\u672c\uff0c\u8fd9\u4e2a\u7cbe\u7b80\u7248\u672c\u53bb\u9664\u4e86\u6d88\u606f\u7c7b\u578b\u548c\u56de\u8f66\u6362\u884c\u7b26\u3002<\/p>\n
\u6211\u4eec\u4ee5”get world”\u8fd9\u4e2a\u547d\u4ee4\u4e3a\u4f8b\u3002\u6765\u770b\u4e0b\u4e0d\u540c\u65b9\u5f0f\u7684\u8fde\u63a5\u60c5\u51b5\u3002<\/p>\n
\u9996\u5148\u662f\u4f7f\u7528redis-cli\u8fdb\u884c\u8fde\u63a5\uff1a<\/p>\n
redis-cli -h 127.0.0.1\n127.0.0.1:6379> get world\n\"hello\"\n<\/pre>\n
\u56e0\u4e3aredis-cli\u662fredis\u7684\u5ba2\u6237\u7aef\uff0c\u6240\u4ee5\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528inline command\u6765\u6267\u884c\u547d\u4ee4\u3002<\/p>\n
\u5982\u679c\u4f7f\u7528telnet,\u6211\u4eec\u4e5f\u53ef\u4ee5\u4f7f\u7528\u540c\u6837\u7684\u547d\u4ee4\u6765\u83b7\u5f97\u7ed3\u679c\uff1a<\/p>\n
telnet 127.0.0.1 6379\nTrying 127.0.0.1...\nConnected to localhost.\nEscape character is '^]'.\nget world\n$5\nhello\n<\/pre>\n
\u53ef\u4ee5\u770b\u5230\u8fd4\u56de\u7684\u7ed3\u679c\u662f”$5\\r\\nhello\\r\\n”\u3002<\/p>\n
\u5982\u679c\u8981\u4f7f\u7528\u534f\u8bae\u6d88\u606f\u6765\u8bf7\u6c42redis\u670d\u52a1\u5668\u5e94\u8be5\u600e\u4e48\u505a\u5462\uff1f<\/p>\n
\u6211\u4eec\u8981\u8bf7\u6c42\u7684\u547d\u4ee4\u662f”get world”,\u5c06\u5176\u8f6c\u6362\u6210\u4e3aRESP\u7684\u6d88\u606f\u5219\u662f\uff1a<\/p>\n
\"*2\\r\\n$3\\r\\nget\\r\\n$5\\r\\nworld\\r\\n\"\n<\/pre>\n
\u6211\u4eec\u5c1d\u8bd5\u4e00\u4e0b\u5c06\u4e0a\u8ff0\u547d\u4ee4\u4f7f\u7528nc\u4f20\u9012\u5230redis server\u4e0a\uff1a<\/p>\n
(printf \"*2\\r\\n$3\\r\\nget\\r\\n$5\\r\\nworld\\r\\n\"; sleep 1) |  nc localhost 6379\n-ERR Protocol error: expected '$', got ' '\n<\/pre>\n
\u5f88\u9057\u61be\u6211\u4eec\u5f97\u5230\u4e86ERR\uff0c\u90a3\u4e48\u662f\u4e0d\u662f\u4e0d\u80fd\u76f4\u63a5\u4f7f\u7528RESP\u6d88\u606f\u683c\u5f0f\u8fdb\u884c\u4f20\u8f93\u5462\uff1f\u5f53\u7136\u4e0d\u662f\uff0c\u4e0a\u9762\u7684\u95ee\u9898\u5728\u4e8e$<\/code>\u7b26\u53f7\u662f\u4e00\u4e2a\u7279\u6b8a\u5b57\u7b26\uff0c\u6211\u4eec\u9700\u8981\u8f6c\u4e49\u4e00\u4e0b\uff1a<\/p>\n
(printf \"*2\\r\\n\\$3\\r\\nget\\r\\n\\$5\\r\\nworld\\r\\n\"; sleep 1) |  nc localhost 6379\n$5\nhello\n<\/pre>\n
\u53ef\u4ee5\u770b\u5230\u8f93\u51fa\u7684\u7ed3\u679c\u548c\u76f4\u63a5\u4f7f\u7528redis-cli\u4e00\u81f4\u3002<\/p>\n
\u603b\u7ed3<\/h2>\n
\u53ef\u80fd\u5927\u5bb6\u53c8\u4f1a\u95ee\u4e86\uff0c\u4e3a\u4ec0\u4e48\u53ea\u662fredis\u5ba2\u6237\u7aef\u5462\uff1f\u6709\u4e86\u534f\u8bae\u662f\u4e0d\u662fredis\u670d\u52a1\u5668\u7aef\u4e5f\u53ef\u4ee5\u521b\u5efa\u5462\uff1f\u7b54\u6848\u5f53\u7136\u662f\u80af\u5b9a\u7684\uff0c\u53ea\u9700\u8981\u6309\u7167\u534f\u8bae\u8fdb\u884c\u6d88\u606f\u4f20\u8f93\u5373\u53ef\u3002\u4e3b\u8981\u7684\u95ee\u9898\u5728\u4e8eredis\u670d\u52a1\u5668\u7aef\u7684\u5b9e\u73b0\u6bd4\u8f83\u590d\u6742\uff0c\u4e0d\u662f\u90a3\u4e48\u5bb9\u6613\u5b9e\u73b0\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
redis proto...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-201366","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201366","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=201366"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201366\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201366"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201366"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}