Redis是一个开源的，基于内存的高性能键值存储系统，它支持多种数据结构，如字符串、列表、集合、散列和有序集合等，在使用Redis的过程中，我们可能会遇到key的乱码问题，这个问题主要是由于Redis默认使用的是UTF-8编码，而在某些情况下，如果客户端和服务器端的编码不一致，就可能导致key的乱码问题。
如何解决这个问题呢？以下是一些可能的解决方案：
1、设置Redis的编码：我们可以在Redis的配置文件中设置编码为UTF-8，这样就可以确保所有的key都是以UTF-8编码存储的，在redis.conf文件中，我们可以看到这样的一行配置：
The default database to choose when the server starts dbfilename dump.rdb The working directory. The DB will be written inside this directory, with the filename specified above using the 'dbfilename' configuration directive. dir /var/lib/redis The Append Only File. The default append only log file name. appendonly no Save the final state of the databases at the shutdown even if there are active clients. save 900 1 save 300 10 save 60 10000 stop-writes-on-bgsave-error yes rdbcompression yes dbfilename dump.rdb dbport 6379 dbpassword mypass maxclients 10000 maxmemory 2gb maxmemory-policy allkeys-lru appendfsync everysec appendonly yes appendfilename "appendonly.aof" appendfsync no no-appendfsync-on-rewrite no auto-aof-rewrite-percentage 100 auto-aof-rewrite-min-size 64mb aof-load-truncated yes aof-use-rdb-preamble yes lua-time-limit 5000 slowlog-log-slower-than 10000 slowlog-max-len 128 latency-monitor-threshold 0 notify-keyspace-events "" hash-max-ziplist-entries 512 hash-max-ziplist-value 64 list-max-ziplist-size -2 list-compress-depth 0 set-max-intset-entries 512 zset-max-ziplist-entries 128 zset-max-ziplist-value 64 hll-sparse-max-bytes 360 activerehashing yes client-outputbuflimit normal 0 0 0 client-outputbuflimit slave 256mb 64mb 60 client-outputbuflimit pubsub 32mb 8mb 60 save 900 1 save 300 10 save 60 10000 stop-writes-on-bgsave-error yes rdbcompression yes dbfilename dump.rdb dbport 6379 dbpassword mypass maxclients 10000 maxmemory 2gb maxmemory-policy allkeys-lru appendfsync everysec appendonly yes appendfilename "appendonly.aof" appendfsync no no-appendfsync-on-rewrite no auto-aof-rewrite-percentage 100 auto-aof-rewrite-min-size 64mb aof-load-truncated yes aof-use-rdb-preamble yes lua-time-limit 5000 slowlog-log-slower-than 10000 slowlog-max-len 128 latency-monitor-threshold 0 notify-keyspace-events "" hash-max-ziplist-entries 512 hash-max-ziplist-value 64 list-max-ziplist-size -2 list-compress-depth 0 set-max-intset-entries 512 zset-max-ziplist-entries 128 zset-max-ziplist-value 64 hll-sparse-max-bytes 360 activerehashing yes clientoutputbuflimit normal 0 0 0 clientoutputbuflimitslave 256mb64mb60 clientoutputbuflimitpubsub32mb8mb60 save9001 save30010 save6010000 stopwritesonbgsaveerroryes rdbcompressionyes dbfilenamedump.rdb dbport6379 dbpasswordmypass maxclients10
