Reject Stale Deferred Work

local generation = 0

local function requestRefresh()
  generation = generation + 1
  local requestGeneration = generation

  sendRequest {
    generation = requestGeneration,
  }
end

local function onRefreshComplete(result)
  if result.generation ~= generation then return end

  applyResult(result)
end

Increment the generation at every transition that makes older work invalid.

See Paid For With Blood — Generations for Deferred Work.