martinuke0's Blog

A dashboard visualizing utilization, saturation, and errors across a distributed system.

Mastering the USE Method: Investigating System Bottlenecks through Utilization, Saturation, and Errors

A step‑by‑step guide that shows engineers how to gather and interpret utilization, saturation, and error metrics, then translate them into actionable architecture changes.

Diagram of PostgreSQL WAL segments flowing to disk and archive storage.

Deep Dive into Postgres Write-Ahead Logging: Ensuring Durability and Data Integrity for Production Systems

A production‑focused guide to PostgreSQL’s WAL, covering its internals, architecture decisions, tuning knobs, and how to survive crashes.

Diagram of a PostgreSQL server with WAL segment files streaming to a replica.

Mastering the PostgreSQL Write-Ahead Log: A Deep Dive into Durable Transactional Architectures

A practical guide to PostgreSQL’s WAL, covering its internals, durability guarantees, and proven patterns for building resilient transaction pipelines.

Diagram of a multimodal RAG pipeline connecting vision-language models, vector stores, and LLMs.

Architecting Multimodal RAG Pipelines: Integrating Vision-Language Models for Production-Ready Applications

A step‑by‑step guide to architecting multimodal RAG systems, covering component selection, scaling patterns, and real‑world deployment tips.

Illustration of PostgreSQL data pages with version chains.

Deep Dive into PostgreSQL MVCC: Transaction Isolation, Snapshot Management, and Real-World Concurrency Control

A hands‑on look at PostgreSQL’s MVCC engine, how snapshots are built, isolation guarantees, and the patterns engineers use to keep high‑throughput workloads safe.