What a successful HMAC check tells you about webhook forwarding
With payment webhooks, “almost unchanged” is not unchanged enough. A real payment webhook passed through an intermediary delivery service and still ve…
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Webhooks and on-demand revalidation: keep your headless site fresh without full rebuilds
Originally published on nomacms.com . I work on NomaCMS . Static and ISR sites are fast because they cache content. That same cache is why your homepa…
How to Test SendGrid Webhooks Locally
The Challenge of Testing SendGrid Webhooks Locally SendGrid webhooks are powerful—they let you track email opens, bounces, clicks, and delivery status…
How to Test Razorpay Webhooks Locally
The Challenge: Testing Razorpay Webhooks Without Public Infrastructure Testing Razorpay payment webhooks locally is frustrating. Razorpay's webhook sy…
Webhook 400 Bad Request: Debugging & Fixes
The 400 Bad Request Problem A webhook 400 bad request error hits your logs at 2 AM. Your integration was working yesterday. The provider (Stripe, GitH…
How to Test Twilio Webhooks Locally
The Problem: Twilio Webhooks Won't Hit Your Localhost When you're building a Twilio integration—whether handling incoming SMS, voice callbacks, or cal…
Webhook Signature Mismatch: Root Causes & Solutions
The Silent Killer: Why Webhook Signature Mismatch Errors Happen A webhook arrives at your endpoint, but the signature verification fails. Your handler…
How to Test Slack Webhooks Locally
The Challenge of Testing Slack Webhooks Locally Testing Slack webhooks locally is deceptively tricky. Slack needs to reach your handler over the inter…
Webhook Retry Logic: Exponential Backoff Best Practices
Why Webhook Retry Logic Matters Your webhook handler crashes. The provider sends a request. You miss it. Now what? Without proper webhook retry logic …
Webhook Idempotency: Handling Duplicate Events
The Silent Killer: Why Webhook Idempotency Matters You deploy a webhook handler that charges a customer $50 on every payment.completed event. The paym…
How to Test Shopify Webhooks Locally
The Problem: Shopify Webhooks Won't Hit Your Local Machine You're building a Shopify app. Your backend listens on http://localhost:3000/webhooks/order…
Sync a mailbox into your own database with Nylas
You want your app to have its own copy of a user's email: to search it fast, run analytics over it, or feed it to a model without hitting the provider…
Test Webhooks Locally Without ngrok
The ngrok Problem If you've built against Stripe, GitHub, or Shopify webhooks, you know the friction: spin up ngrok, get a random URL, paste it into y…
Mastering Webhook Signature Verification in Local Dev
The 400 Bad Request Ghost You’ve set up your listener, configured your tunnel, and triggered a test event from Stripe or GitHub. Everything looks perf…
Все тесты зелёные, платежи зависли: 5 граблей интеграции без песочницы
Осенью 2022-го мы добавляли в наш платёжный агрегатор новый способ оплаты: плательщик уходит по ссылке в приложение своего банка, подтверждает платёж …
How I Cut Our Shopify API Usage in Half (Without Losing Features)
If you build on Shopify long enough, you hit the wall. Throttled requests. Stalled inventory syncs. Webhook backlogs piling up during a flash sale. Sh…
Idempotency Lessons From an Email Agent
A customer emails your support agent at 9:14 a.m. At 9:15 they get a helpful reply. At 9:16 they get the same reply again, word for word. Nothing cras…
Shopify Webhook Observability: Complete Implementation Guide
Shopify Webhook Observability: Complete Implementation Guide Webhooks are the nervous system of your Shopify integration. When they fail silently, dat…
Handling Duplicate Shopify Webhook Events (And Why You Must)
You built a Shopify integration. It works great in dev. Then in production, a customer gets charged twice. Or an order ships twice. Or your inventory …
Self-Hosted Vessel Email Alerts with AWS Lambda and SES
The thing you actually want is an email. Not a dashboard you have to remember to open. Not a webhook you have to write a server for. An email — the ki…