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Openresty accesses redis and MySQL

2022-07-21 05:22:00 【dragonpeng2008】

15.1 lua-resty-redis External access redis cache

GitHub - openresty/lua-resty-redis: Lua redis client driver for the ngx_lua based on the cosocket API

So let's talk about that lua-resty-redis Of lua Script writing .

15.1.1 Common methods

--  Inquire about key Value 
local res, err = red:get("key")
--  Inquire about list Value 
local res, err = red:lrange("nokey", 0, 1)
--  With json Format output value 
ngx.say("res:",cjson.encode(res))

15.1.2 establish redis Connect

red, err = redis:new()
ok, err = red:connect(host, port, options_table?)

15.1.3 Set up timeout

red:set_timeout(time)

15.1.4 Set up keepalive

red:set_keepalive(max_idle_timeout, pool_size)

15.1.5 close redis Connect

ok, err = red:close()

15.1.6 Use pipeline Submit redis command

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