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joshuawscott/set_save_ex.lua

Last active August 29, 2015 14:08
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Redis LUA stuff
Raw
set_save_ex.lua
-- Sets KEY to VALUE, preserving any existing TTL
-- Call with EVAL "..." 1 KEY VALUE
-- or
-- LOAD SCRIPT "..."
-- => <SHA1>
-- EVALSHA <SHA1> 1 KEY VALUE
local ttl = redis.pcall('ttl', KEYS[1])
if ttl == -1 then
return redis.pcall('set', KEYS[1], ARGV[1])
else
return redis.pcall('set', KEYS[1], ARGV[1], 'ex', ttl)
end
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