Guides on webhook reliability: signature verification, idempotency, delivery guarantees, and EU-hosted infrastructure.https://webhooker.eu/en-ushttps://webhooker.eu/blog/hookdeck-alternatives-eu/https://webhooker.eu/blog/hookdeck-alternatives-eu/Looking for a Hookdeck alternative because of data residency, pricing or inbound focus? Here's an honest selection framework and where EU-hosted options fit.Mon, 24 Aug 2026 00:00:00 GMThookdeck-alternativeswebhook-gatewayeu-hostingdata-residencygdprvendor-selectionWebhooker Teamhttps://webhooker.eu/blog/webhook-pricing-models/https://webhooker.eu/blog/webhook-pricing-models/Per-event, per-seat, per-destination or self-hosted — each model breaks at a different point. Here's how to compare them, and why overage billing turns a traffic spike into an invoice.Fri, 21 Aug 2026 00:00:00 GMTwebhookspricingbillingwebhook-gatewaycost-comparisonWebhooker Teamhttps://webhooker.eu/blog/are-webhooks-personal-data-gdpr/https://webhooker.eu/blog/are-webhooks-personal-data-gdpr/Most webhook payloads carry an email, a name or an IP, which makes them personal data under GDPR. Here's what that means for your webhook layer: roles, retention, deletion and sub-processors.Wed, 19 Aug 2026 00:00:00 GMTgdprwebhooksdata-protectionretentioneu-hostingWebhooker Teamhttps://webhooker.eu/blog/static-outbound-ip-webhooks/https://webhooker.eu/blog/static-outbound-ip-webhooks/Some destinations only accept traffic from known IPs. Here's why cloud egress addresses drift, what a static outbound IP gives you, and why an allowlist is not a substitute for signatures.Mon, 17 Aug 2026 00:00:00 GMTwebhooksstatic-outbound-ipip-allowlistfirewallwebhook-securityenterpriseWebhooker Teamhttps://webhooker.eu/blog/postgres-job-queue-skip-locked/https://webhooker.eu/blog/postgres-job-queue-skip-locked/You don't need Kafka for a job queue. How SELECT ... FOR UPDATE SKIP LOCKED turns a Postgres table into a durable queue many workers claim from safely — with the schema, bloat and locking details that matter.Fri, 14 Aug 2026 00:00:00 GMTpostgresqljob-queueskip-lockedfor-update-skip-lockedmessage-queuewebhooksreliabilityWebhooker Teamhttps://webhooker.eu/blog/ordered-webhook-delivery/https://webhooker.eu/blog/ordered-webhook-delivery/Webhooks arrive out of order by default. When ordering actually matters, how FIFO delivery works, and what head-of-line blocking costs you.Wed, 12 Aug 2026 00:00:00 GMTwebhooksevent-orderinghead-of-line-blockingfifoidempotencyreliabilityWebhooker Teamhttps://webhooker.eu/blog/at-least-once-vs-exactly-once-webhooks/https://webhooker.eu/blog/at-least-once-vs-exactly-once-webhooks/Webhook delivery guarantees compared: why exactly-once fails over HTTP, what at-least-once promises, and how idempotent consumers reach effectively-once.Mon, 10 Aug 2026 00:00:00 GMTwebhooksreliabilitydelivery-guaranteesat-least-onceidempotencydistributed-systemsWebhooker Teamhttps://webhooker.eu/blog/how-do-webhooks-work/https://webhooker.eu/blog/how-do-webhooks-work/Most explanations stop at "the provider sends you a POST". Here is the real request, header by header, what your 200 actually means, and what the sender does when you do not answer.Fri, 07 Aug 2026 00:00:00 GMTwebhookshttpconceptbeginnersevent-drivenWebhooker Teamhttps://webhooker.eu/blog/stripe-webhook-signing-secret/https://webhooker.eu/blog/stripe-webhook-signing-secret/Your Stripe webhook signing secret lives in the Webhooks tab in Workbench, behind "Click to reveal". Here's the exact path, why the CLI gives you a different one, and why test and live never share a secret.Fri, 07 Aug 2026 00:00:00 GMTwebhooksstripesigning-secretsignature-verificationtroubleshootingWebhooker Teamhttps://webhooker.eu/blog/webhook-signature-verification-failed/https://webhooker.eu/blog/webhook-signature-verification-failed/Six causes behind "No signatures found matching the expected signature for payload" and its equivalents: a parsed body, the wrong secret, hex vs base64, clock skew, a rewriting proxy, or test vs live keys.Fri, 07 Aug 2026 00:00:00 GMTwebhookssignature-verificationhmactroubleshootingwebhook-securitystripegithubshopifyWebhooker Teamhttps://webhooker.eu/blog/webhook-vs-api/https://webhooker.eu/blog/webhook-vs-api/An API gives you data when you ask. A webhook sends it when something happens. The real decision is not push versus pull, it is which side of the connection has to be reliable.Fri, 07 Aug 2026 00:00:00 GMTwebhooksapicomparisonpollingevent-drivenconceptWebhooker Teamhttps://webhooker.eu/blog/webhook-replay-attacks-timestamp-tolerance/https://webhooker.eu/blog/webhook-replay-attacks-timestamp-tolerance/A signature proves a webhook was genuine once. Without a timestamp check, a captured request stays valid forever. Here's how tolerance windows, clock skew and dedupe stop replays.Wed, 05 Aug 2026 00:00:00 GMTwebhookssecurityreplay-attacksignature-verificationtimestamp-toleranceidempotencyWebhooker Teamhttps://webhooker.eu/blog/webhook-security-signature-verification/https://webhooker.eu/blog/webhook-security-signature-verification/A public webhook endpoint accepts POSTs from anyone. This is the full security model: verify the provider's HMAC signature, reject replays with a timestamp window, and sign what you forward.Mon, 03 Aug 2026 00:00:00 GMTwebhookssecurityhmacsignature-verificationreplay-protectionwebhook-authenticationWebhooker Teamhttps://webhooker.eu/blog/shopify-webhook-verification-gdpr/https://webhooker.eu/blog/shopify-webhook-verification-gdpr/Shopify's HMAC is base64, not hex, which trips up most integrations. Verify it correctly and handle the mandatory GDPR webhooks reliably.Fri, 31 Jul 2026 00:00:00 GMTwebhooksshopifygdprsignature-verificationintegrationWebhooker Teamhttps://webhooker.eu/blog/webhooker-vs-svix-vs-hookdeck/https://webhooker.eu/blog/webhooker-vs-svix-vs-hookdeck/Svix, Hookdeck and Webhooker solve different problems: sending vs receiving webhooks, US vs EU hosting. A practical way to choose one in 2026.Wed, 29 Jul 2026 00:00:00 GMTwebhookscomparisonsvixhookdeckwebhook-gatewayWebhooker Teamhttps://webhooker.eu/blog/webhook-dead-letter-queue-replay/https://webhooker.eu/blog/webhook-dead-letter-queue-replay/When retries run out, a webhook shouldn't just vanish. A dead letter queue catches failed deliveries so you can inspect and replay them.Mon, 27 Jul 2026 00:00:00 GMTwebhooksdead-letter-queuereplayreliabilityrecoveryWebhooker Teamhttps://webhooker.eu/blog/webhook-idempotency-keys/https://webhooker.eu/blog/webhook-idempotency-keys/At-least-once delivery means your consumer sometimes sees the same event twice. How to dedupe with a stable event id, and how that differs from the Idempotency-Key header you send when calling an API.Sat, 25 Jul 2026 00:00:00 GMTwebhooksidempotencydeduplicationreliabilityat-least-onceWebhooker Teamhttps://webhooker.eu/blog/verify-github-webhook-signature/https://webhooker.eu/blog/verify-github-webhook-signature/GitHub signs webhooks with X-Hub-Signature-256. Verify the HMAC against the raw body and handle redeliveries so you never process an event twice.Wed, 22 Jul 2026 00:00:00 GMTwebhooksgithubsignature-verificationsecurityintegrationWebhooker Teamhttps://webhooker.eu/blog/build-vs-buy-webhook-infrastructure/https://webhooker.eu/blog/build-vs-buy-webhook-infrastructure/Rolling your own webhook receiver looks simple until verification, retries, idempotency and replay pile up. An honest build-vs-buy cost breakdown.Sun, 19 Jul 2026 00:00:00 GMTwebhooksbuild-vs-buywebhook-infrastructureengineering-costWebhooker Teamhttps://webhooker.eu/blog/webhook-retries-exponential-backoff/https://webhooker.eu/blog/webhook-retries-exponential-backoff/Naive retries hammer a destination that's already down. Retry webhooks properly instead: exponential backoff, jitter and a circuit breaker.Thu, 16 Jul 2026 00:00:00 GMTwebhooksreliabilityretriesexponential-backoffcircuit-breakerWebhooker Teamhttps://webhooker.eu/blog/verify-stripe-webhook-signatures/https://webhooker.eu/blog/verify-stripe-webhook-signatures/Stripe signs webhooks with the Stripe-Signature header. How the signed payload is built, how to recompute the HMAC-SHA256 over the raw bytes, and how the timestamp tolerance stops replays.Mon, 13 Jul 2026 00:00:00 GMTwebhooksstripesignature-verificationsecuritytroubleshootingWebhooker Teamhttps://webhooker.eu/blog/eu-hosted-webhook-infrastructure/https://webhooker.eu/blog/eu-hosted-webhook-infrastructure/Webhooks routinely carry personal and payment data, and the gateway sees all of it. Here's why EU-only ingest, storage and delivery matter under GDPR.Fri, 10 Jul 2026 00:00:00 GMTwebhooksgdpreu-hostingdata-residencycomplianceWebhooker Teamhttps://webhooker.eu/blog/what-is-a-webhook-gateway/https://webhooker.eu/blog/what-is-a-webhook-gateway/A webhook gateway sits between the apps that send you webhooks and your code — it verifies, stores, retries and replays every event, so a plain webhook receiver in your app never has to.Wed, 08 Jul 2026 00:00:00 GMTwebhookswebhook-gatewayconceptinbound-webhooksinfrastructureWebhooker Team