Our Blog

Welcome to the Polar Signals blog where we write about profiling, performance, and company culture.

Parallel Flame Graph Rendering

How we improved our Flame Graph rendering by moving computation to the backend.

September 3, 2025 | Yomi Eluwande

Flame Graphs

Profiling

Data Visualization

Das Problem mit German Strings

And why I don't want my database to choose the best encoding for me (yet)

August 26, 2025 | Alfonso Subiotto Marqués

Databases

Column Database

Datafusion

Apache Arrow

Vortex

OOMProf - Profiling on the Brink

Using eBPF to record your programs dying breathes

August 13, 2025 | Tommy Reilly

BPF

Memory Profiling

OOM

Offline Mode for the Parca Agent

Collect and upload profiles -- even without a network connection

August 7, 2025 | Brennan Vincent

Profiling

Parca Agent

Introducing Off-CPU Profiling

How Off-CPU profiling works and how to get the most out of it

July 30, 2025 | Frederic Branczyk

Profiling

System-Wide

Off-CPU

Reproducible Builds with Next.js: A Practical Guide

A step-by-step guide to achieving reproducible builds with Next.js.

July 23, 2025 | Manoj Vivek

Nextjs

Engineering Practices

Javascript

CI/CD

The MCP for performance engineering

Introducing Remote MCP Support in Polar Signals Cloud

July 17, 2025 | Matthias Loibl

Performance Analysis

Performance

Observability

GPU

Deterministic Simulation Testing in Rust: A Theater Of State Machines

How we designed our database for complete control over concurrency, time, randomness, and failure injection.

July 8, 2025 | Alfonso Subiotto Marqués

Testing

Deterministic Simulation Testing

Rust

Databases

Distributed Systems