https://dev-flow.io/en/categories/architecture/ Recent content in Architecture on DevFlow · Python Django Developer Freelance Hugo en Fri, 05 Jun 2026 00:00:00 +0200 https://dev-flow.io/en/posts/pragmatic-cqrs-django/ Fri, 05 Jun 2026 00:00:00 +0200 https://dev-flow.io/en/posts/pragmatic-cqrs-django/ Pragmatic CQRS splits write and read models when they diverge. No dogma, no Event Sourcing, just a denormalized read model fed by Outbox events. https://dev-flow.io/en/posts/idempotency-keys-api-pattern/ Thu, 04 Jun 2026 00:00:00 +0200 https://dev-flow.io/en/posts/idempotency-keys-api-pattern/ An idempotency key turns a POST into a safe-to-replay operation. The client can retry without risking a duplicate, even after a network timeout. https://dev-flow.io/en/posts/inbox-pattern-idempotent-consumer/ Wed, 03 Jun 2026 00:00:00 +0200 https://dev-flow.io/en/posts/inbox-pattern-idempotent-consumer/ The Inbox pattern guarantees that an event received several times is processed only once. The natural counterpart of the Outbox on the consumer side. https://dev-flow.io/en/posts/transactional-outbox-pattern/ Tue, 02 Jun 2026 00:00:00 +0200 https://dev-flow.io/en/posts/transactional-outbox-pattern/ The Transactional Outbox pattern guarantees that every published event matches a persisted state. One SQL transaction for both the database and the broker. https://dev-flow.io/en/posts/saga-pattern-distributed-transactions/ Mon, 01 Jun 2026 00:00:00 +0200 https://dev-flow.io/en/posts/saga-pattern-distributed-transactions/ The Saga pattern breaks a distributed transaction into compensable steps. Each step undoes its effect when a later one fails, keeping the system consistent. https://dev-flow.io/en/posts/anti-corruption-layer/ Wed, 27 May 2026 00:00:00 +0200 https://dev-flow.io/en/posts/anti-corruption-layer/ The anti-corruption layer (ACL) isolates your business logic from external APIs. A single translation point, from raw JSON to typed, stable objects. https://dev-flow.io/en/posts/connascence-python/ Mon, 11 May 2026 00:00:00 +0200 https://dev-flow.io/en/posts/connascence-python/ Connascence classifies coupling into 9 distinct types. Discover each form with a concrete Python example and how to decide which ones to reduce first.