Page 2 - Symfony

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Migrating Doctrine ORM 2 to 3: Breaking Changes in Symfony

Maxim Mironjuk - March 07, 2026

Doctrine ORM 3 replaces proxy classes with Lazy Ghost Objects, changes EntityManager methods, and tightens mapping for embeddables. Teams that know these breaking changes before migrating and follow a clear checklist can bring existing Symfony projects onto the new ORM version without production downtime.

Symfony

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Symfony Deployment: Zero Downtime with Deployer PHP

Maxim Mironjuk - March 02, 2026

Every Symfony deployment that briefly puts the application into an inconsistent state is an avoidable risk. Deployer PHP solves this with atomic symlinks: the new release is fully built and ready before a single request hits it, the symlink swap takes milliseconds, and it makes a rollback trivial.

Symfony Redis

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Symfony Cache: Complex Multi-Layer Caching Strategies

Maxim Mironjuk - February 27, 2026

Caching in Symfony means more than $cache->get(). Anyone who really wants to gain performance combines multiple cache layers: APCu for ultra-fast in-process data, Redis for shared state across PHP processes, HTTP cache for complete response reuse, and keeps all three layers consistent through tag-based invalidation.

Symfony REST-API

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MapQueryString and MapRequestPayload: Request Mapping in Symfony 7

Maxim Mironjuk - February 19, 2026

Anyone still writing manual $request->query->get() and json_decode($request->getContent()) in Symfony controllers is giving up type safety and validation for nothing. MapQueryString and MapRequestPayload have mapped query parameters and request bodies directly into typed DTOs since Symfony 6.3, automatically deserialized, validated, and ready to use.

Symfony Testing/E2E

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Contract Testing for Symfony APIs: Catching Breaking Changes Before Deployment

Maxim Mironjuk - February 19, 2026

A green end to end test does not prove that every consumer of a Symfony API keeps working once a response field changes. Contract testing makes every consumer's expectations explicit and checks them automatically against the real provider, long before a breaking change causes damage in production.

Symfony PHP

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Symfony 7 Attribute Cheatsheet: All the New PHP Attributes at a Glance

Maxim Mironjuk - February 15, 2026

PHP 8 attributes have largely replaced YAML and XML in Symfony configuration. Symfony 7 brings dozens of PHP attributes for routing, dependency injection, events, caching, security and request mapping, all with semantics identical to the previous configuration formats, but considerably more compact and placed directly on the code.

Symfony Web Performance

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HTTP Caching with the Symfony Reverse Proxy: ESI Without Varnish

Maxim Mironjuk - February 14, 2026

Symfony ships a fully fledged HTTP reverse proxy right inside the PHP process through its HttpCache class, including support for edge side includes. Anyone who configures this reverse proxy correctly caches whole pages and individual fragments, without having to run extra infrastructure like Varnish.

Symfony

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API Platform 4: REST und GraphQL ohne Boilerplate in Symfony | mironsoft.de

Maxim Mironjuk - February 11, 2026

Wer eine REST- oder GraphQL-API in Symfony von Hand aufbaut, schreibt Controller, Serializer-Konfigurationen, Pagination und Fehlerbehandlung selbst. API Platform 4 übernimmt das alles deklarativ — eine PHP-Klasse mit dem richtigen Attribut reicht, um eine vollständige API-Ressource mit Filterung, Pagination und OpenAPI-Dokumentation zu erhalten.

Symfony PHPUnit

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PHPUnit Data Providers in Symfony: Parameterized Tests Without Duplication

Maxim Mironjuk - February 01, 2026

Writing a separate test method for every input variation multiplies maintenance effort instead of test coverage. The PHPUnit data provider separates test logic from test data and turns ten near identical methods into one clearly readable test method with a dozen data sets.

Symfony Docker

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Symfony and Kubernetes: Health Checks with Liveness and Readiness Probes

Maxim Mironjuk - January 25, 2026

A misconfigured health check is more dangerous than none at all. Kubernetes restarts healthy pods because a liveness probe was written too strictly, or sends traffic to a pod whose database connection dropped long ago. This article shows how a health check for Symfony in Kubernetes becomes truly reliable, with liveness, readiness and startup probes working together.