The ProdFix Blog

Error monitoring explained in plain English: what it does, why it matters, and how to set it up in 2 minutes.

Observability, monitoring, and logging explained — what each one is and which ones you actually need.

APM explained for developers. What it monitors, how it works, and whether you need it as a solo founder.

Stack traces are the key to debugging production errors. Here's how to read and use them effectively.

Average latency hides the experience of your slowest users. Here's what P95 and P99 mean and why they matter.

These enterprise reliability terms matter for solo founders too. Here's what they mean in practice.

Content Security Policy violations explained in plain English. What causes them and how to interpret them.

Memory leaks explained without jargon. What causes them in JavaScript and how to detect them.

Core Web Vitals explained: LCP, CLS, and INP — what they measure, why Google uses them, and what scores to aim for.

Rate limiting explained for solo founders. What it is, how to implement it, and what happens without it.

Webhooks explained in plain English. How they work, where they break, and how to monitor them.

CDN explained for solo founders. What it does for performance, which one to use, and when it's worth the cost.

Canary deployments roll out to a subset of users first. Here's how they work and when solo founders need them.

The circuit breaker pattern prevents cascading failures in production. Here's what it is and how to implement it.

Blue-green deployments eliminate downtime during releases. Here's what they are and a simpler alternative.

OpenTelemetry is the open standard for observability. Here's what it does and whether solo founders need it.

Distributed tracing follows requests across services. Here's when you need it and when you don't.

Synthetic monitoring runs automated tests. RUM captures real users. Here's the difference and when to use each.

Chaos engineering deliberately causes failures to find weaknesses. Here's the solo founder version.

Mean Time to Repair and Mean Time to Detect are the core reliability metrics. Here's what they mean.

Technical debt explained without jargon. What it is, how it accumulates, and when to pay it down.

Feature parity matters for API compatibility and migrations. Here's what it means in practice.

Dark launches deploy code that's not yet activated. Here's how they work and why they're useful.

Shadow traffic duplicates production requests for testing. Here's what it is and when to use it.