JOURNAL / PRODUCT ENGINEERING

Engineering decisions.
Explained in practice.

Practical guides to reliable systems, from tenant isolation and integrations to AI retrieval and product operations.

Page 10 of 10 · Articles 109–116 of 116

Message paths converging on one verified outcome, illustrating webhook processing.
Integrations · Webhooks109

Designing webhooks for duplicates, retries and delayed events

A durable inbox, signature checks and idempotent processing for payment and commerce integrations.

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Organized tasks moving through processing stations, illustrating background queues.
Laravel · Queues110

Laravel queues: retries, transactions and safe side effects

A production-oriented approach to job boundaries, transaction timing, retries and operational visibility.

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An ordered collection with a path to one record, illustrating a database index.
PostgreSQL · Performance111

Choose PostgreSQL indexes from real query patterns

Read query plans, design a candidate composite index and measure the cost of faster reads.

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Nearby fast storage connected to a central source, illustrating caching.
Redis · Performance112

Redis caching: freshness, tenant keys and invalidation

Design cache-aside around acceptable staleness, safe keys and an explicit invalidation strategy.

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Distinct rooms within one building, illustrating modular software boundaries.
Architecture · Backend113

A modular monolith before microservices: defining real boundaries

Design modules around business ownership and explicit contracts before adding distributed operations.

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Individual entry portals into separate spaces, illustrating custom domain routing.
SaaS · Infrastructure114

Custom domains in SaaS: ownership, routing and TLS

Model custom domain onboarding as a lifecycle, from verified ownership to secure routing and removal.

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Connected system components with visible monitoring paths, illustrating observability.
Operations · Observability115

Backend observability: follow the user’s operation across services

Connect metrics, structured logs and traces to diagnose slow requests and failed background operations.

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Two systems joined through a matching interface, illustrating an API contract.
APIs · Integration116

Designing API contracts that survive real integrations

Define schemas, errors, pagination and compatibility before a client depends on your API.

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