有没有可能出现这种情况:
一段 lua 在运行过程中, 用 ttl 命令检查了 key 的剩余存活时间, 然后准备做进一步操作, 结果这个时间中 key 过期被清理了?
一段 lua 在运行过程中, 用 ttl 命令检查了 key 的剩余存活时间, 然后准备做进一步操作, 结果这个时间中 key 过期被清理了?
This topic created in 2621 days ago, the information mentioned may be changed or developed.
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fuxinyaSep 4, 2019 via Android
1
参见 https://grokbase.com/t/gg/redis-db/1281v06jyr/keys-that-expire-in-lua-scripts
Since a whole Lua script execution is a single client command, Redis will not actively expire keys while a Lua client script is being run. |
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fuxinyaSep 4, 2019 via Android
2
but if the TTL runs out and the script attempts to
access the key, Redis will notice the key is expired and act as if the key does not exist. |
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LaxSep 4, 2019
3
那段 lua 太慢的话先把 ttl 续上几秒再执行。最好不要因为单条 lua 指令会 block 其它请求。
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