Page 2 - REST-API

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Generating API Mocks from OpenAPI Specifications

Maxim Mironjuk - February 16, 2026

A mock server that is maintained by hand drifts away from the real API within weeks. Mock servers that work directly from the OpenAPI specification are always in sync, enabling frontend development without a backend dependency, QA tests without production infrastructure, and error scenarios at the push of a button.

Symfony REST-API

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Designing CSV, XML and Bulk Endpoints in REST APIs Cleanly

Maxim Mironjuk - February 14, 2026

Alternative formats and mass operations present REST APIs with real design problems: when to use content negotiation, when a dedicated endpoint? How do you stream thousands of records with reasonable performance? How does a bulk operation communicate partial failures clearly enough for clients to react sensibly?

REST-API Testing/E2E

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Setting Up an OpenAPI Mock Server for Frontend Development

Maxim Mironjuk - February 13, 2026

Frontend teams waiting for finished backend endpoints waste development time. A mock server built from the OpenAPI spec delivers realistic API responses in minutes, including error scenarios, network latency simulation and automatic validation of every request against the spec.

Symfony REST-API Security/OWASP

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Rate Limiting, Abuse Prevention and API Keys in Symfony

Maxim Mironjuk - January 28, 2026

A public API without rate limiting is an open invitation for abuse. Token bucket and sliding window algorithms cap the request load per client, API keys enable differentiated limits, and abuse prevention patterns detect and block malicious behavior before it hits the infrastructure.

Symfony REST-API

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Symfony REST API From Scratch: Controller, DTOs, Serializer, Validator, Error Handling

Maxim Mironjuk - January 24, 2026

A production-ready Symfony REST API is not born from plugging individual components together, it requires a clear architecture that connects all the pieces consistently: request deserialization, validation, business logic, response serialization and unified error handling. This guide shows the complete setup with Symfony 7 and PHP 8.4.

REST-API

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HATEOAS: Pragmatic REST and When Hypermedia Really Makes Sense

Maxim Mironjuk - January 19, 2026

HATEOAS is the principle that separates REST from a simple HTTP data transport, and at the same time the most debated and least implemented REST constraint. This article explains what hypermedia actually means, which formats have proven themselves, and when pragmatism should win over purity.

REST-API Testing/E2E

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Enforcing Backward Compatibility in API Schemas

Maxim Mironjuk - January 12, 2026

A breaking change in a REST API is not a versioning problem, it is a contract problem. When consumers rely on a schema and the provider silently changes it, production outages appear without warning. Technical enforcement means detecting breaking changes automatically, enforcing deprecation cycles and using consumer-driven contract tests as a structural safety net.

Symfony REST-API

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Caching in REST APIs: Using ETag, Last-Modified and Cache-Control Correctly

Maxim Mironjuk - December 24, 2025

A REST API that loads the same data from the database on every request and sends it back in full wastes bandwidth and server resources. ETag, Last-Modified and Cache-Control are the HTTP standard tools that prevent exactly that, with 304 Not Modified for unchanged resources and proxy caching for public data.

REST-API

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Modeling PATCH Correctly: Merge Patch vs. JSON Patch

Maxim Mironjuk - December 18, 2025

HTTP PATCH is the most commonly misimplemented method in REST APIs. The reason: there are two standardized variants with very different semantics, and most implementations invent a third, proprietary variant that is neither documented nor consistent. Merge Patch and JSON Patch solve real problems, but different ones.

Symfony REST-API Testing/E2E

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API Testing in Symfony: HttpClient, Panther, PHPUnit and Contract Tests

Maxim Mironjuk - November 16, 2025

A REST API without a test strategy is a promise without a guarantee. Symfony offers a complete ecosystem for every test layer with HttpClient, Panther and PHPUnit, from fast unit tests for validation logic to contract tests that make sure API consumers and API providers speak the same interface specification.