Technical deep dives, production engineering, resilience, and software architecture takeaways by Pablo Fesa.https://fesa.dev/en-UShttps://fesa.dev/en/blog/laya-en-cpu-lo-que-medi-tres-maquinas-onnx-vps/https://fesa.dev/en/blog/laya-en-cpu-lo-que-medi-tres-maquinas-onnx-vps/38ms was with a GPU. On CPU, 94 to 848ms depending on the machine. Real benchmarks, the thread trap, ONNX vs PyTorch, and how the deployment ended up on a VPS.Wed, 07 Oct 2026 00:00:00 GMTArtificial IntelligenceOpen SourceSystem OnePythonONNXBenchmarkshttps://fesa.dev/en/blog/arquitectura-hexagonal-ddd-laravel-eloquent-dtos/https://fesa.dev/en/blog/arquitectura-hexagonal-ddd-laravel-eloquent-dtos/How to architect complex enterprise applications in Laravel without letting Eloquent pollute business rules: Ports and Adapters, immutable PHP 8.2 Value Objects, and strict layer boundaries.Tue, 06 Oct 2026 00:00:00 GMTArchitecture & BackendPHPLaravelHexagonal ArchitectureDDDDesign PatternsBackendhttps://fesa.dev/en/blog/php-a-escala-planetaria-tipado-phpstan-fibers-parte-4/https://fesa.dev/en/blog/php-a-escala-planetaria-tipado-phpstan-fibers-parte-4/Why tech giants like Slack, Wikipedia, and Meta continue investing in PHP: the operational economics of stateless workloads in Kubernetes, maximum static analysis, and cooperative concurrency with Fibers.Fri, 02 Oct 2026 00:00:00 GMTArchitecture & BackendPHPHigh ConcurrencyPHPStanDistributed SystemsFibersArchitecturehttps://fesa.dev/en/blog/dentro-de-zend-vm-opcache-preloading-jit-parte-3/https://fesa.dev/en/blog/dentro-de-zend-vm-opcache-preloading-jit-parte-3/A low-level inspection of PHP's execution pipeline: AST compilation to bytecode, shared memory acceleration with OPcache, Preloading, and the real impact of the JIT compiler.Mon, 28 Sep 2026 00:00:00 GMTArchitecture & BackendPHPPerformanceZend EngineOPcacheJITCompilershttps://fesa.dev/en/blog/vulnerabilidad-wordpress-cve-2026-87902-path-traversal-rce/https://fesa.dev/en/blog/vulnerabilidad-wordpress-cve-2026-87902-path-traversal-rce/Technical analysis of advisory GHSA-7hp8-65ch-5whp in WordPress Core (4.7 to 7.1.1): how page-template resolution triggers local file inclusion, conditions for RCE, and mitigation steps.Thu, 24 Sep 2026 00:00:00 GMTSecurity & BackendWordPressSecurityPHPVulnerabilitiesDevOpshttps://fesa.dev/en/blog/laya-system-one-open-source-decisiones/https://fesa.dev/en/blog/laya-system-one-open-source-decisiones/40ms on GPU, 94 to 848ms on CPU depending on the machine, multilingual, and zero per-token cost. How Laya brings calibrated probabilistic inference to production pipelines alongside LLMs.Wed, 23 Sep 2026 00:00:00 GMTArtificial IntelligenceOpen SourceMachine LearningSystem OnePythonArchitecturehttps://fesa.dev/en/blog/system-one-models-jev-automatizacion/https://fesa.dev/en/blog/system-one-models-jev-automatizacion/Generating text token-by-token to classify, route, or evaluate state in enterprise software is slow and expensive. Here is how System One Models like TypeSafe AI's Jev complement traditional LLMs.Tue, 22 Sep 2026 00:00:00 GMTAI & ArchitectureTypeSafe AIJevSystem One ModelsAutomationSoftware Architecturehttps://fesa.dev/en/blog/de-php-fpm-a-frankenphp-persistencia-en-memoria/https://fesa.dev/en/blog/de-php-fpm-a-frankenphp-persistencia-en-memoria/How in-memory persistence and FrankenPHP's Worker Mode eliminate the framework boot tax in modern stacks like Laravel, slashing latencies from 40ms down to sub-millisecond ranges.Sat, 19 Sep 2026 00:00:00 GMTArchitecture & BackendPHPFrankenPHPLaravelArchitecturePerformanceDistributed Systemshttps://fesa.dev/en/blog/anatomia-laravel-facades-ioc-eloquent-vs-doctrine-parte-2/https://fesa.dev/en/blog/anatomia-laravel-facades-ioc-eloquent-vs-doctrine-parte-2/Demystifying Laravel's internal design: how Facades really work via metaprogramming, IoC Container auto-wiring, and the architectural trade-offs between Active Record and Data Mapper.Wed, 16 Sep 2026 00:00:00 GMTArchitecture & BackendPHPLaravelArchitectureDesign PatternsDatabasesBackendhttps://fesa.dev/en/blog/del-caos-a-los-estandares-psr-composer-parte-1/https://fesa.dev/en/blog/del-caos-a-los-estandares-psr-composer-parte-1/An architectural deep dive into PHP's evolution from isolated silos to modular interoperability with PSR-4, PSR-7, PSR-11 containers, and Composer's SAT solver.Sun, 13 Sep 2026 00:00:00 GMTArchitecture & BackendPHPComposerPSRArchitectureEcosystemBackendhttps://fesa.dev/en/blog/arquitectura-autopujas-tiempo-real/https://fesa.dev/en/blog/arquitectura-autopujas-tiempo-real/How to build an auction system that ingests 300,000+ public lots and fires automated bids within the final 5 seconds without database locks or concurrency crashes.Wed, 09 Sep 2026 00:00:00 GMTArchitecture & BackendLaravel.NETDistributed SystemsPerformanceMySQLhttps://fesa.dev/en/blog/flujos-agenticos-deterministas-langgraph/https://fesa.dev/en/blog/flujos-agenticos-deterministas-langgraph/Unconstrained AI agent loops fail in production. Here is how to architect 5-node deterministic StateGraphs with shared memory, local vector search, and typed Pydantic models.Sat, 05 Sep 2026 00:00:00 GMTAI & EngineeringLangGraphPythonHybrid RAGpgvectorpytesthttps://fesa.dev/en/blog/hardening-servidores-linux-produccion/https://fesa.dev/en/blog/hardening-servidores-linux-produccion/A pragmatic hardening guide for enterprise dedicated servers and cloud VPS: kernel sysctl tuning, closing public administration ports with private overlay networking, and collective threat mitigation.Tue, 01 Sep 2026 00:00:00 GMTInfrastructure & SecurityLinuxSecurityTailscaleCrowdSecDevOps