I have a lot of data in Redis like
User_DB_1:<user_id> , User_Main:<user_id>, Skills_DB_1:<user_id>

I set the maxmemory to 50MB and write a lua script and run it in Redis that lua file should remove data that has pattern User_DB_1:<user_id> and shouldn’t remove any data for Skills pattern

I have tried a lot and I see that each time remove data matches Skills pattern and I run it uses

redis-cli --eval /data/redis_evication.lua
and the output is (integer) 1000

I am trying to know how can I write a lua file and execute it with the expected results

local cursor = "0"
local patterns = {"User_DB_1:*", "User_Main:*"}
local total_evicted = 0
local limit = 1000 -- Limit of keys to evict per script run

repeat
    -- Scan for the first pattern
    local res = redis.call("SCAN", cursor, "MATCH", patterns[1], "COUNT", limit)
    cursor = res[1]
    local keys = res[2]

    for _, key in ipairs(keys) do
        if string.match(key, "^User_DB_1:%d+$") then
            redis.call("DEL", key)
            redis.log(redis.LOG_NOTICE, "Deleted key: " .. key)
            total_evicted = total_evicted + 1
            if total_evicted >= limit then
                return total_evicted
            end
        end
    end

    -- Scan for the second pattern
    res = redis.call("SCAN", cursor, "MATCH", patterns[2], "COUNT", limit)
    cursor = res[1]
    keys = res[2]

    for _, key in ipairs(keys) do
        if string.match(key, "^User_Main:%d+$") then
            redis.call("DEL", key)
            redis.log(redis.LOG_NOTICE, "Deleted key: " .. key)
            total_evicted = total_evicted + 1
            if total_evicted >= limit then
                return total_evicted
            end
        end
    end
until cursor == "0"

return total_evicted```