https://federicocalo.dev/en/blog Articles about software development, AI, machine learning, architecture and technology en Mon, 06 Jul 2026 11:05:36 GMT generate-rss-feed.mjs info@federicocalo.dev (Federico Calo) info@federicocalo.dev (Federico Calo) https://federicocalo.dev/assets/images/logo.png https://federicocalo.dev/en/blog https://federicocalo.dev/en/blog/github-copilot-extensions-marketplace https://federicocalo.dev/en/blog/github-copilot-extensions-marketplace Thu, 07 Jan 2027 00:00:00 GMT Federico Calo GitHub Copilot Extend Copilot with Extensions and Skillsets from the Marketplace. MCP integration, third-party agents (Claude, Codex), and how to create your own custom extension. https://federicocalo.dev/en/blog/github-copilot-advanced-customization https://federicocalo.dev/en/blog/github-copilot-advanced-customization Sun, 03 Jan 2027 00:00:00 GMT Federico Calo GitHub Copilot Three levels of customization: personal instructions, repository (.github/copilot-instructions.md), and organization. MCP integration and content exclusion. https://federicocalo.dev/en/blog/github-copilot-ai-models-selection-guide https://federicocalo.dev/en/blog/github-copilot-ai-models-selection-guide Fri, 01 Jan 2027 00:00:00 GMT Federico Calo GitHub Copilot Complete comparison of AI models in Copilot: GPT-4.1, Claude Opus/Sonnet/Haiku, Gemini. Auto Mode, manual selection, premium requests, and optimal use cases. https://federicocalo.dev/en/blog/github-copilot-spaces-memory https://federicocalo.dev/en/blog/github-copilot-spaces-memory Wed, 30 Dec 2026 00:00:00 GMT Federico Calo GitHub Copilot Organize context with Copilot Spaces and leverage Agentic Memory to remember patterns and conventions. Semantic repository indexing in under 60 seconds. https://federicocalo.dev/en/blog/eventual-consistency-distributed-systems-strategies-ux https://federicocalo.dev/en/blog/eventual-consistency-distributed-systems-strategies-ux Tue, 29 Dec 2026 00:00:00 GMT Federico Calo Event-Driven Architecture Eventual consistency is the fundamental trade-off of event-driven systems: this guide covers strategies for making temporarily inconsistent systems acceptable to users, from optimistic feedback to reconciliation patterns. https://federicocalo.dev/en/blog/github-spark-natural-language-apps https://federicocalo.dev/en/blog/github-spark-natural-language-apps Mon, 28 Dec 2026 00:00:00 GMT Federico Calo GitHub Copilot Create full-stack apps with GitHub Spark: describe in natural language, real-time preview, one-click deploy. TypeScript + React powered by Claude Sonnet 4. https://federicocalo.dev/en/blog/github-copilot-edits-agent-mode https://federicocalo.dev/en/blog/github-copilot-edits-agent-mode Sat, 26 Dec 2026 00:00:00 GMT Federico Calo GitHub Copilot Multi-file editing and self-healing Agent Mode in Copilot: Plan Mode, Next Edit Suggestions, symbol-aware editing, and comparison between Edit Mode and Agent Mode. https://federicocalo.dev/en/blog/github-copilot-automatic-code-review https://federicocalo.dev/en/blog/github-copilot-automatic-code-review Thu, 24 Dec 2026 00:00:00 GMT Federico Calo GitHub Copilot Automatic reviews in under 30 seconds: auto-review configuration, custom instructions for organizational standards, and one-click implementable suggestions. https://federicocalo.dev/en/blog/outbox-pattern-event-publication-atomic-cdc https://federicocalo.dev/en/blog/outbox-pattern-event-publication-atomic-cdc Tue, 22 Dec 2026 00:00:00 GMT Federico Calo Event-Driven Architecture The dual-write problem (saving to the DB and publishing to Kafka/SQS atomically) is solved by the Outbox Pattern: write the event to an outbox table in the same DB transaction, then use Debezium CDC for reliable publication. https://federicocalo.dev/en/blog/github-copilot-coding-agent-autonomous-development https://federicocalo.dev/en/blog/github-copilot-coding-agent-autonomous-development Tue, 22 Dec 2026 00:00:00 GMT Federico Calo GitHub Copilot GitHub Copilot\ https://federicocalo.dev/en/blog/claude-code-monitoring-productivity https://federicocalo.dev/en/blog/claude-code-monitoring-productivity Sat, 19 Dec 2026 00:00:00 GMT Federico Calo Claude Tools for monitoring and optimizing Claude Code: ccflare for metrics, session management, claudekit, status lines, and ROI with 75-85% development time savings. https://federicocalo.dev/en/blog/idempotency-event-driven-consumer-deduplication-key https://federicocalo.dev/en/blog/idempotency-event-driven-consumer-deduplication-key Tue, 15 Dec 2026 00:00:00 GMT Federico Calo Event-Driven Architecture In a distributed system with at-least-once delivery, the same message may be received more than once. Consumer idempotency is the defence: deduplication with idempotency keys, exactly-once processing with database transactions and inbox/outbox. https://federicocalo.dev/en/blog/claude-cowork-ai-knowledge-workers https://federicocalo.dev/en/blog/claude-cowork-ai-knowledge-workers Tue, 15 Dec 2026 00:00:00 GMT Federico Calo Claude Claude Code without the terminal: automation for non-developers on macOS. File organization, data extraction, document synthesis, and parallel processing with sub-agents. https://federicocalo.dev/en/blog/claude-code-bmad-ai-driven-agile https://federicocalo.dev/en/blog/claude-code-bmad-ai-driven-agile Fri, 11 Dec 2026 00:00:00 GMT Federico Calo Claude The BMAD method (Breakthrough Method for Agile AI Development): document sharding, 21 specialized agents, 50+ guided workflows, and adaptive intelligence at scale. https://federicocalo.dev/en/blog/dead-letter-queue-resilience-failed-messages https://federicocalo.dev/en/blog/dead-letter-queue-resilience-failed-messages Tue, 08 Dec 2026 00:00:00 GMT Federico Calo Event-Driven Architecture The DLQ is the essential safety net for any async system: it captures unprocessable messages after the maximum retry count, enables error analysis and selective re-processing without data loss. https://federicocalo.dev/en/blog/measuring-monitoring-core-web-vitals-production https://federicocalo.dev/en/blog/measuring-monitoring-core-web-vitals-production Mon, 07 Dec 2026 00:00:00 GMT Federico Calo Core Web Vitals Measuring Core Web Vitals in the lab is not enough: field data from the Chrome User Experience Report (CrUX) often diverges 30-50% from synthetic data. This guide shows how to implement real-user monitoring with the Web Vitals JS library, build a BigQuery dashboard and interpret the P75 percentiles Google actually uses for ranking. https://federicocalo.dev/en/blog/claude-code-hooks-event-driven-automation https://federicocalo.dev/en/blog/claude-code-hooks-event-driven-automation Mon, 07 Dec 2026 00:00:00 GMT Federico Calo Claude Automate your workflow with Claude Code\ https://federicocalo.dev/en/blog/claude-code-skills-modular-capabilities https://federicocalo.dev/en/blog/claude-code-skills-modular-capabilities Thu, 03 Dec 2026 00:00:00 GMT Federico Calo Claude Discover Claude Code Agent Skills: modular architecture, 62+ community skills across 10 categories, and how to create custom skills for your workflow. https://federicocalo.dev/en/blog/aws-sqs-sns-eventbridge-when-to-use-which https://federicocalo.dev/en/blog/aws-sqs-sns-eventbridge-when-to-use-which Tue, 01 Dec 2026 00:00:00 GMT Federico Calo Event-Driven Architecture A practical decision guide for choosing between SQS (FIFO queue, at-least-once), SNS (fan-out pub/sub) and EventBridge (intelligent routing): each service has a specific use case and combining them requires understanding the trade-offs. https://federicocalo.dev/en/blog/css-novelties-2026-if-grid-lanes-scroll-animations https://federicocalo.dev/en/blog/css-novelties-2026-if-grid-lanes-scroll-animations Mon, 30 Nov 2026 00:00:00 GMT Federico Calo Core Web Vitals 2026 marks a generational leap for CSS: if() introduces native conditional logic in property values, Grid Lanes brings native masonry layout without JavaScript, and scroll-driven animations reach full cross-browser compatibility. https://federicocalo.dev/en/blog/aws-eventbridge-event-bus-routing-schema-registry https://federicocalo.dev/en/blog/aws-eventbridge-event-bus-routing-schema-registry Tue, 24 Nov 2026 00:00:00 GMT Federico Calo Event-Driven Architecture Amazon EventBridge is the AWS serverless event router: it routes events based on their content to Lambda, SQS, Step Functions and more. This guide covers routing rules, the Schema Registry and Event Archive for replay. https://federicocalo.dev/en/blog/case-study-observability-microservices https://federicocalo.dev/en/blog/case-study-observability-microservices Tue, 24 Nov 2026 00:00:00 GMT Federico Calo Observability Startup con 5 microservizi implementa OTel: auto-instrumentation in Java services, Collector gateway, Jaeger + Prometheus + Grafana, correlation IDs for logs. Risultati: MTTR -40%, insights +60%. https://federicocalo.dev/en/blog/view-transitions-api-navigation-animations https://federicocalo.dev/en/blog/view-transitions-api-navigation-animations Mon, 23 Nov 2026 00:00:00 GMT Federico Calo Core Web Vitals The View Transitions API brings the fluid animations of native apps directly to the browser, without third-party libraries. The same-document variant is Baseline 2025, while cross-document transitions are reaching full interoperability in 2026. https://federicocalo.dev/en/blog/scaling-rag-systems-performance-production https://federicocalo.dev/en/blog/scaling-rag-systems-performance-production Sat, 21 Nov 2026 00:00:00 GMT Federico Calo PostgreSQL AI Complete guide to Scaling RAG Systems: Performance and Production: architecture, practical implementation and best practices for developers and technical teams. https://federicocalo.dev/en/blog/saga-pattern-distributed-transactions-choreography-orchestration https://federicocalo.dev/en/blog/saga-pattern-distributed-transactions-choreography-orchestration Tue, 17 Nov 2026 00:00:00 GMT Federico Calo Event-Driven Architecture The Saga Pattern solves distributed transactions without expensive 2PC: each service executes its local transaction and, on failure, a compensating transaction is triggered. Choreography vs Orchestration compared. https://federicocalo.dev/en/blog/pgvector-indexing-strategies-hnsw-vs-ivfflat https://federicocalo.dev/en/blog/pgvector-indexing-strategies-hnsw-vs-ivfflat Tue, 17 Nov 2026 00:00:00 GMT Federico Calo PostgreSQL AI Complete guide to pgvector Indexing Strategies: HNSW vs IVFFlat: architecture, practical implementation and best practices for developers and technical teams. https://federicocalo.dev/en/blog/css-anchor-positioning-tooltip-dropdown https://federicocalo.dev/en/blog/css-anchor-positioning-tooltip-dropdown Mon, 16 Nov 2026 00:00:00 GMT Federico Calo Core Web Vitals The CSS Anchor Positioning API — 78% browser support since January 2026 — lets you attach an element to another as an anchor without a single line of JavaScript: no more fragile offset calculations, no ResizeObserver, just declarative CSS. https://federicocalo.dev/en/blog/vector-similarity-search-algorithms-implementation https://federicocalo.dev/en/blog/vector-similarity-search-algorithms-implementation Fri, 13 Nov 2026 00:00:00 GMT Federico Calo PostgreSQL AI Complete guide to Vector Similarity Search: Algorithms and Implementation: architecture, practical implementation and best practices for developers and technical teams. https://federicocalo.dev/en/blog/case-study-quality-framework-ai-code https://federicocalo.dev/en/blog/case-study-quality-framework-ai-code Wed, 11 Nov 2026 00:00:00 GMT Federico Calo Quality Engineering Startup implementa quality framework: SAST + test intelligence + security scanning + CI/CD guardrails. Risultati: defect rate -45%, production issues -60%, developer satisfaction +30%. Timeline: 2 mesi, team di 2. https://federicocalo.dev/en/blog/event-sourcing-cqrs-projection-snapshot-eventual-consistency https://federicocalo.dev/en/blog/event-sourcing-cqrs-projection-snapshot-eventual-consistency Tue, 10 Nov 2026 00:00:00 GMT Federico Calo Event-Driven Architecture Combining event sourcing with CQRS is powerful but complex: how to build projections for the read model, use snapshots to shorten replay on aggregates with many events, and handle eventual consistency gracefully. https://federicocalo.dev/en/blog/css-container-queries-responsive-components https://federicocalo.dev/en/blog/css-container-queries-responsive-components Mon, 09 Nov 2026 00:00:00 GMT Federico Calo Core Web Vitals Container Queries are a breakthrough in responsive design: instead of reacting to the viewport, components react to their container\ https://federicocalo.dev/en/blog/building-rag-systems-postgresql https://federicocalo.dev/en/blog/building-rag-systems-postgresql Mon, 09 Nov 2026 00:00:00 GMT Federico Calo PostgreSQL AI Complete guide to Building RAG Systems with PostgreSQL: architecture, practical implementation and best practices for developers and technical teams. https://federicocalo.dev/en/blog/anomaly-detection-computer-vision-manufacturing https://federicocalo.dev/en/blog/anomaly-detection-computer-vision-manufacturing Fri, 06 Nov 2026 00:00:00 GMT Federico Calo Computer Vision Complete guide to Anomaly Detection with Computer Vision in Manufacturing: architecture, practical implementation and best practices for developers and technical teams. https://federicocalo.dev/en/blog/vector-embeddings-explained-theory-practice https://federicocalo.dev/en/blog/vector-embeddings-explained-theory-practice Thu, 05 Nov 2026 00:00:00 GMT Federico Calo PostgreSQL AI Complete guide to Vector Embeddings Explained: Theory and Practice: architecture, practical implementation and best practices for developers and technical teams. https://federicocalo.dev/en/blog/productivity-metrics-velocity-quality https://federicocalo.dev/en/blog/productivity-metrics-velocity-quality Wed, 04 Nov 2026 00:00:00 GMT Federico Calo Quality Engineering DORA metrics con AI code, productivity paradox (more code ≠ more value), cost of quality vs speed, ROI analysis, business case. https://federicocalo.dev/en/blog/cqrs-command-query-responsibility-segregation-scaling https://federicocalo.dev/en/blog/cqrs-command-query-responsibility-segregation-scaling Tue, 03 Nov 2026 00:00:00 GMT Federico Calo Event-Driven Architecture CQRS separates the write model (command side) from the read model (query side), allowing each to be optimised independently. This guide covers practical implementation, read model projections and async synchronisation. https://federicocalo.dev/en/blog/font-optimization-subsetting-variable-fonts https://federicocalo.dev/en/blog/font-optimization-subsetting-variable-fonts Mon, 02 Nov 2026 00:00:00 GMT Federico Calo Core Web Vitals Web fonts can be the difference between excellent and mediocre LCP: subsetting reduces files from 400KB to 140KB improving Largest Contentful Paint by 20%. This guide covers WOFF2, variable fonts, unicode-range, preconnect and the optimal font-display strategy. https://federicocalo.dev/en/blog/face-detection-recognition-mediapipe-beyond https://federicocalo.dev/en/blog/face-detection-recognition-mediapipe-beyond Mon, 02 Nov 2026 00:00:00 GMT Federico Calo Computer Vision Complete guide to Face Detection and Recognition: MediaPipe and Beyond: architecture, practical implementation and best practices for developers and technical teams. https://federicocalo.dev/en/blog/pgvector-tutorial-turn-postgresql-vector-database https://federicocalo.dev/en/blog/pgvector-tutorial-turn-postgresql-vector-database Sun, 01 Nov 2026 00:00:00 GMT Federico Calo PostgreSQL AI Complete guide to pgvector Tutorial: Turn PostgreSQL into a Vector Database: architecture, practical implementation and best practices for developers and technical teams. https://federicocalo.dev/en/blog/deploying-yolo26-edge-raspberry-pi-jetson https://federicocalo.dev/en/blog/deploying-yolo26-edge-raspberry-pi-jetson Thu, 29 Oct 2026 00:00:00 GMT Federico Calo Computer Vision Complete guide to Deploying YOLO26 on Edge: Raspberry Pi and Jetson: architecture, practical implementation and best practices for developers and technical teams. https://federicocalo.dev/en/blog/complexity-assessment-cognitive-load https://federicocalo.dev/en/blog/complexity-assessment-cognitive-load Wed, 28 Oct 2026 00:00:00 GMT Federico Calo Quality Engineering Cyclomatic complexity, cognitive complexity, maintainability assessment, AI code tendency per complessità, threshold setting, refactoring recommendations. https://federicocalo.dev/en/blog/event-sourcing-application-state-immutable-events https://federicocalo.dev/en/blog/event-sourcing-application-state-immutable-events Tue, 27 Oct 2026 00:00:00 GMT Federico Calo Event-Driven Architecture Event Sourcing replaces in-place record updates with appending immutable events: current state is derived by replaying the sequence. Discover the advantages, trade-offs and how to implement an event store from scratch. https://federicocalo.dev/en/blog/ai-observability-monitoring-llm-agent https://federicocalo.dev/en/blog/ai-observability-monitoring-llm-agent Tue, 27 Oct 2026 00:00:00 GMT Federico Calo Observability LLM tracing (token usage, latency, errors), agent tracing (decisions, tool calls), cost tracking, hallucination detection signals, monitoring frameworks. https://federicocalo.dev/en/blog/cls-prevention-cumulative-layout-shift https://federicocalo.dev/en/blog/cls-prevention-cumulative-layout-shift Mon, 26 Oct 2026 00:00:00 GMT Federico Calo Core Web Vitals Cumulative Layout Shift measures how much content unexpectedly shifts during load. Images without explicit dimensions, fonts displacing fallbacks and dynamic ad banners are the most common culprits. Precise debugging tools and CSS patterns to eliminate every visible shift. https://federicocalo.dev/en/blog/building-cv-pipelines-opencv-integration-pytorch https://federicocalo.dev/en/blog/building-cv-pipelines-opencv-integration-pytorch Sun, 25 Oct 2026 00:00:00 GMT Federico Calo Computer Vision Complete guide to Building CV Pipelines: OpenCV Integration with PyTorch: architecture, practical implementation and best practices for developers and technical teams. https://federicocalo.dev/en/blog/image-augmentation-techniques-prevent-overfitting https://federicocalo.dev/en/blog/image-augmentation-techniques-prevent-overfitting Wed, 21 Oct 2026 00:00:00 GMT Federico Calo Computer Vision Complete guide to Image Augmentation: Techniques to Prevent Overfitting: architecture, practical implementation and best practices for developers and technical teams. https://federicocalo.dev/en/blog/cicd-guardrails-quality-gates-policy https://federicocalo.dev/en/blog/cicd-guardrails-quality-gates-policy Wed, 21 Oct 2026 00:00:00 GMT Federico Calo Quality Engineering Quality gates in CI/CD (coverage threshold, complexity limits, security checks), policy as code (OPA/Kyverno), blocking merges per qualità, dashboard monitoring. https://federicocalo.dev/en/blog/event-driven-architecture-fundamentals-domain-events-message-bus https://federicocalo.dev/en/blog/event-driven-architecture-fundamentals-domain-events-message-bus Tue, 20 Oct 2026 00:00:00 GMT Federico Calo Event-Driven Architecture Event-driven architecture rests on three foundational concepts: domain events that describe what happened, commands that express intent, and a message bus that decouples producers from consumers. https://federicocalo.dev/en/blog/lcp-optimization-image-preloading-critical-css https://federicocalo.dev/en/blog/lcp-optimization-image-preloading-critical-css Mon, 19 Oct 2026 00:00:00 GMT Federico Calo Core Web Vitals Largest Contentful Paint must occur within 2.5 seconds for optimal user experience and good Google ranking. The four highest-impact strategies — image preloading, critical CSS inlining, font preloading with display:swap and SSR — analysed with practical examples. https://federicocalo.dev/en/blog/image-segmentation-semantic-instance-panoptic https://federicocalo.dev/en/blog/image-segmentation-semantic-instance-panoptic Sat, 17 Oct 2026 00:00:00 GMT Federico Calo Computer Vision Complete guide to Image Segmentation: Semantic, Instance, Panoptic: architecture, practical implementation and best practices for developers and technical teams.