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JavaScriptintermediatebackend

Multi-tenant API Gateway

Node.js API Gateway with per-tenant routing, JWT authentication, per-plan rate limiting, request/response transformation, and centralized logging.

5 steps
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Project steps

  1. 01

    Tenant resolution

    Resolves tenant from subdomain or X-Tenant-ID header.

  2. 02

    JWT auth

    JWT verification middleware with jwks-rsa for public key per tenant.

  3. 03

    Rate limiting

    Redis sliding window per tenant+endpoint; different limits per plan.

  4. 04

    Reverse proxy

    Forwards the request to the correct upstream per tenant with injected headers.

  5. 05

    Request/response transform

    Per-tenant plugins: add/delete headers, transform JSON body.

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5 steps

Tech stack

Node.jsFastifyRedisjsonwebtokenhttp-proxy-middleware