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bullmq

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A powerful, fast, and robust job queue for Elixir backed by Redis

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bullmq priv scripts getMetrics-2.lua
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priv/scripts/getMetrics-2.lua 

--[[

  Get metrics

  Input:

    KEYS[1] 'metrics' key

    KEYS[2] 'metrics data' key

    ARGV[1] start index

    ARGV[2] end index

]]

local rcall = redis.call;

local metricsKey = KEYS[1]

local dataKey = KEYS[2]

local metrics = rcall("HMGET", metricsKey, "count", "prevTS", "prevCount")

local data = rcall("LRANGE", dataKey, tonumber(ARGV[1]), tonumber(ARGV[2]))

local numPoints = rcall("LLEN", dataKey)

return {metrics, data, numPoints}