openresty / openresty/lua-resty-redis

red:smembers("key"), sometime not include the new member?

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Dominant language
Lua
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Description

in my kong lua scripts, I write some code in access function like this:
local redis = require "resty.redis"
local red = redis:new()
red:set_timeouts(5000, 5000, 5000)
local ok, err = red:connect(redisHost, redisPort)
local result, err = red:smembers("all_allow_urls")
local ok, keep_err = red:set_keepalive(10000, 100)
at first, the key "all_allow_urls" in redis is a set, which include 10 members, then I execute SADD all_allow_urls 'aaa' in redis-cli cmd;
but when I visit my kong to check the result from red:smembers("all_allow_urls"), it sometimes include "aaa" but sometimes not。
Can you help me?

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the Kong Lua snippet using resty.redis and reproduce the sequence with Redis CLI: read the set with smembers, run SADD all_allow_urls 'aaa', then read it again through the client. Compare the returned members across repeated requests, including the set_keepalive path; done means the intermittent omission is reproduced, explained, and covered by a verified fix or a confirmed external cause.

Written by the indexing model from the issue text.

Assessment

Tech stack
lua, redis
Domain
backend, databases
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
35/100

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