Performance

Illustration of layered database snapshots representing MVCC.

Deep Dive into Postgres Multi-Version Concurrency Control: Architecture, Snapshot Isolation, and Performance Optimization

A production‑focused walkthrough of PostgreSQL’s MVCC internals, snapshot isolation guarantees, and practical tips to keep your database fast and healthy.

Diagram of Linux cgroup hierarchy with containers.

Mastering Cgroups v2 Resource Isolation: Implementation Strategies for Modern Linux Systems and Container Routines

A practical guide for engineers to implement cgroups v2, covering architecture, migration, tuning, and real‑world examples in Kubernetes and Docker.

Diagram of shared memory pages with copy-on-write arrows.

Deep Dive into Copy-on-Write Semantics in Modern Linux Kernels: Architecture, Implementation, and Real-World Patterns

A technical walkthrough of Linux’s copy‑on‑write mechanism, from page‑fault handling to real‑world deployment patterns.

A stylized flame graph overlaying a server rack, hinting at hidden performance issues.

Inside Performance Profiling: Identifying Critical Bottlenecks Hidden by Standard CPU Flame Graphs

Standard flame graphs give a surface view, but subtle latency sources stay invisible. This post shows how to dig deeper with async tracing, hardware counters, and custom aggregations.

Diagram of a Linux cgroup hierarchy with resource controllers.

Mastering cgroups v2 Resource Isolation: Implementation Strategies, Unified Hierarchy, and Production-Ready Performance Controls

Explore how to adopt cgroups v2 in production, understand its unified hierarchy, and apply concrete performance‑tuning patterns.