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@lacspace/rate-limit

v1.2.1Security Kit0 deps

Framework-agnostic rate limiting — five algorithms (fixed, sliding-window log & weighted counter, token bucket, leaky bucket) over a pluggable store, with cost-weighted requests, composite and per-route limiters, and standard IETF RateLimit-* + legacy X-RateLimit-* headers. For API routes, middleware and edge. Zero-dependency, isomorphic.

npm i @lacspace/rate-limit
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Usage

rate-limit.ts
import { rateLimit } from "@lacspace/rate-limit";

const limiter = rateLimit({ limit: 10, windowMs: 60_000, algorithm: "sliding" });

const { success, remaining, retryAfter } = await limiter.check(ip);
if (!success) throw new Error(`Rate limited. Retry in ${retryAfter}s`);

Exports 9

MemoryStoreRateLimitercheckRequestexpressRateLimitipKeyFromRequestrateLimitrateLimitHeadersrateLimitResponsewithRateLimit

Keywords

rate-limitrate-limiterthrottletoken-bucketsliding-windowmiddleware

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