--[[
Add delay marker if needed.
]]
-- Includes
--- @include "getNextDelayedTimestamp"
local function addDelayMarkerIfNeeded(markerKey, delayedKey)
local nextTimestamp = getNextDelayedTimestamp(delayedKey)
if nextTimestamp ~= nil then
-- Replace the score of the marker with the newest known
-- next timestamp.
rcall("ZADD", markerKey, nextTimestamp, "1")
end
end