How to Use ETags for Conditional HTTP Requests
When a client requests a resource from an HTTP server, the server can return an ETag, a header whose value identifies a particular version of the response. The…
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How to Verify Webhook Signatures Before Processing a Request
When a provider sends an HTTP webhook to your service, verify its signature before you trust the payload or trigger any action. The provider creates a webhook signature…
Read articleHow to Version an API Without Breaking Existing Clients
When you change an API, software that already calls it may keep sending the old requests and expecting the old responses. An API version identifies the contract between…
Read articleHow Webhook Providers Classify Delivery Failures
When a service sends a webhook, it sends an HTTP request to a URL you control. The provider checks whether it got a response, how long the request…
Read articleImplementing the Acknowledge-Fast Webhook Pattern
When a provider sends a webhook, your endpoint must tell the provider whether it received the event. If your server performs slow business work before replying, the provider…
Read articleIsolating Webhook Failures: Provider Retries vs. Receiver Bugs
When a provider sends your service a webhook, an HTTP request that carries an event, it expects an HTTP response. The response’s numeric status code tells the provider…
Read articleMapping HTTP Status Codes to Webhook Failures
When a service sends a webhook to your endpoint, it sends an HTTP request with an event, such as a payment update or account change. Your endpoint returns…
Read articleNormalizing Cursor, Offset, and Link Header Pagination
When a service combines data from several APIs, each API may use a different method to return the next batch of records. Pagination splits a large collection into…
Read articlePreventing Webhook Timeouts With Immediate Acknowledgment
A provider sends the receiving service an HTTP request with a webhook event, such as an order or account change. The provider expects a response before a deadline.…
Read articleReading and Interpreting Webhook Delivery Logs
When a service sends an event to your webhook endpoint, it makes an HTTP request to deliver the event. A webhook delivery log records what happened to that…
Read articleRecovering Missed Webhooks Using Provider APIs
When a service sends a webhook to your server and your server does not accept it, the provider may record the delivery as failed. A webhook is an…
Read articleRouting Failed Webhooks to an Error Endpoint
When a provider sends a webhook, it delivers an event to an HTTP endpoint operated by the receiving service. If the endpoint cannot receive the event, or the…
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