Systems | Development | Analytics | API | Testing

"Agentic" is the word of the year in software marketing. Every product that sends an automated email is agentic now. Every tool with a chatbot interface is powered by AI agents. The term has been stretched to the point where it tells you almost nothing about what a product actually does.

Performance rarely breaks on the day you run a load test. It breaks three deploys later, on a Tuesday, when nobody is looking. LoadFocus can now run your load tests for you on a recurring schedule, and email you only when a run actually starts failing. Set it once, and let it watch your app.

Selecting a cloud testing platform is a high-stakes decision for IT managers and QA leads. The market is crowded with vendors touting AI, speed, and integration, but the real test is whether a platform delivers the core capabilities your team genuinely needs. Begin by defining your non-negotiables – features that are essential for your workflows and compliance requirements.

We shipped v2 of a small products API on a Thursday. Green CI. Green replay. The new search endpoint worked. I went home feeling competent. Friday morning I ran the same traffic against both builds with proxymock and compared the SQL. v2 had added 80 queries on the same HTTP script. A per-product audit COUNT was firing inside the list handler. A startup migration had run ALTER TABLE and CREATE TABLE audit_log. Total DB time was up 70 ms on a demo that should have been boring.

Many teams still rely on basic load testing scenarios that generate uniform traffic or repeat scripted actions. These tests often pass without issue, but they rarely reflect the complexity of real user behavior. When unpredictable usage patterns hit production, hidden bottlenecks emerge – leading to outages or slowdowns that scripted tests failed to uncover. This gap between test results and real-world performance is a common source of frustration for engineering teams.

Twenty years of boots-on-the-ground testing experience reveals a clear pattern: the industry has moved from tracking manual test cases in Excel sheets, to managing Selenium Grid configurations, to watching algorithms generate scripts in seconds. Right now, if you are in a managerial role, your feeds are absolutely flooded with pitches promising that.

A customer emailed on a Tuesday: checkout hung for ten seconds. I opened our tracing tool, punched in the time window, and got nothing. The trace was sampled out. We keep 1% of traces, like most shops with real traffic do. The one request that actually mattered was in the 99% we threw away. I spent twenty minutes admiring our observability stack before admitting it couldn’t answer a first-grader’s question: what happened to this person? Here’s what I know now.

Smoke testing checks whether a new build is stable enough to test. Sanity testing checks whether a specific fix or change works as expected. Both are quick validation techniques, but they happen at different stages for different reasons. The easiest way to tell them apart: if you just deployed a new build and want to know if core features are still standing, that’s a smoke test.