Redis script overujici invalidace zaznamu

read.lua

local key = KEYS[1]
local val = redis.call("get", key)
if val == nil then
    return nil
end

local tags = redis.call('sMembers', "Nette.Journal:" .. key .. ":tags")
local expirations = redis.call("hMGet", "invalidations", unpack(tags))

local added = nil
for i, expiration in pairs(expirations) do
    if expiration ~= false then
        if added == nil then
            added = redis.call("hGet", "added", key)
        end
        if added < expiration then
            return nil
        end
    end
end

return val