The handler you assumed existed
The handler you assumed existed We were wiring up a lead pipeline: webhooks in, an agent working the conversation, bookings out. During planning, so…
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Payment Integration Mistakes and How to Fix Them
I've integrated four payment processors in production: eSewa, IMEPay, Dodo Payments and Paddle. eSewa and IMEPay are redirect-based local gateways.…
E-Commerce Webhook Registration: Node.js Queue Isolation for Internal Consumers
An e-commerce access review becomes hard to sign when fraud, fulfillment, finance, and customer messaging all hold the marketplace webhook credentia…
The sync that deleted our leads every 60 seconds
The sync that deleted our leads every 60 seconds Leads were vanishing. Not bouncing, not erroring — just gone. New leads would appear in our registr…
Duplicate Fintech Digest Events: Idempotency Keys Beat Five-Minute FIFO Queue Filtering
Short answer: use the FIFO queue's five-minute duplicate filter to reduce immediate retries, but make a persistent idempotency receipt the authority…
Stripe webhook signature verification failed: the 5 causes and fixes
If you've integrated Stripe webhooks, you've probably seen this error: StripeSignatureVerificationError: No signatures found matching the expected s…
We migrated the receiver but forgot the return trip
We migrated the receiver but forgot the return trip Same incident, different lesson. (If you're counting, this is the day our infrastructure decided…
Доставка вебхуков: повторы, дубли и ещё три источника проблем
Получатель записал заказ в базу, но соединение оборвалось до того, как отправитель получил ответ. Повторить вебхук — рискнуть вторым заказом, не пов…
Sending And Receiving Webhooks In Laravel
A customer deploys their app at 14:00. Their webhook endpoint is down for four minutes while it happens. Your app sends them invoice.paid at 14:01,…
Tunnels are for dev: why our production webhooks left localhost.run
Tunnels are for dev: why our production webhooks left localhost.run This is the third post in a trilogy I didn't plan. Post #1 was the diagnosis: my…
Your integration's real bugs are in the events you can't trigger
Every integration I have written against a third-party API has the same shape. The request/response part is easy and I get it right on day one. The…
Rate-Limited Reminder Recovery: Idempotent Queues After Webhook and Email Send Failures
Short answer: put each user reminder on a queue, make the consumer idempotent, retry transient delivery failures with backoff, and move exhausted wo…
Shopify Webhooks: Pick the Route, Then Create It
If you wire Shopify events into your own endpoint, a queue or a no-code tool, the interesting decisions are not in the admin form. They are in which…
Express Webhook Signature Check: 4 Fixes After a Failing Deploy
A B2B SaaS workload hits its spend ceiling. The budget service sends an alert, yet the receiving Express app rejects it after a deploy and the on-ca…
Poncho Pay Integration Tutorial: Node.js API, Webhooks and Flutter
Never integrated a payment provider before? No problem. This guide takes you from zero to a working Poncho Pay payment in a Node.js API and a Flutte…
Queues, Webhooks and Rate Limits: Retries, Backlogs and Backoff You Can Watch Happen
"At-least-once delivery" is four words that hide a dozen production incidents. So are "consumer lag", "dead letter queue", and "exponential backoff"…
The webhook dedupe everyone copies has a hole in it
If you have ever searched for how to stop processing the same webhook twice, you have seen this snippet: INSERT INTO processed_events ( event_key )…
Building a Webhook Receiver for Match Events in Go
Why you'd need this WebSocket connections are the right call when you need every update the instant it happens and you're fine holding a persistent…
How to Shrink Key Revocation Latency: Webhook Intake with a Scheduled Polling Backstop
Use the push channel for speed and a scheduled poll for proof. Registered webhooks carry a revocation from the issuer to your gateway in a couple of…
How Do Verified Sending Domains, Webhooks, and Logs Work in an Email API?
These three pieces are what let you run email through an API instead of your own mail server: domain verification proves you're allowed to send as y…
How to Handle Webhook Errors in Make.com
Webhooks are one of the easiest ways to connect different tools with Make.com. They are also one of the easiest places for an automation workflow to…
Node.js Consumer Capacity: Webhook Delivery, Rate Limits, and Dead-Letter Decisions
Short answer: treat a renewal reminder's business deadline as the primary SLO, then make the Node.js consumer's rate limit, acknowledgement boundary…
Supabase phone auth without a built-in provider: the Send SMS Hook, step by step
Supabase ships phone auth with a short list of built-in SMS providers. If the one you want isn't on it, you're not stuck. There's a documented escap…
Why a Successful WhatsApp API Request Does Not Mean the Message Was Delivered
If you've built any kind of WhatsApp automation, you've probably had this moment: your code calls the WhatsApp Business API, gets back an HTTP 200 a…
Failed Webhook Backoff and DLQ Redrive for 3 Marketplace Deadline Guarantees
Short answer: A marketplace renewal reminder should enter the dead-letter queue when another attempt cannot finish before its business deadline; use…
The trailing newline that broke every webhook signature.
I spent an evening convinced GitHub was sending broken webhook signatures. It wasn't. echo was. The setup Chngd's GitHub Marketplace webhook verifie…
Simple SMS API Comparison: 3 Bounce-Suppression Controls for App Alert Status
Short answer: for B2B SaaS app alerts, choose an SMS API by whether webhook delivery events and polling results can feed one idempotent status ledge…
Build a Retry-Safe Strapi Webhook Receiver: Idempotency Keys, Backoff, and a Dead-Letter Queue
Strapi's webhooks are simple: an entry changes, Strapi fires a POST request at a URL you configured. What Strapi's docs don't tell you is what happe…
The Free Model Was Slow, the Gateway Gave Up, and My Webhook Ran Twice
Last week I wired a small webhook to a free model on a free server, mostly to see how far the pair could carry real work. I built the summarizer on…
The same failed payment destroyed one customer's data and left the next one's alone
We had a bug that only fired sometimes, and "sometimes" turned out to be a coin flip on webhook arrival order. Here's the setup. Our billing code ha…