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fatigue-kit

Core concepts

  • A key identifies one budget, such as coupon-popup.
  • Rules describe when that key may be consumed. All supplied rules must allow it.
  • A record stores ascending hit timestamps plus a lifetime counter under <namespace>:<key>.
  • A synchronous storage adapter makes the same engine usable in different runtimes.
  • peek evaluates without writing. tryConsume evaluates and, only when allowed, records one hit in the same synchronous call.

Create long-lived instances rather than recreating memory-backed instances per operation. Choose stable keys and a namespace that does not collide with other applications.