PreScale
PreScale is an open-source command-line tool for HTTP/2 load testing that isolates breaking routes and diagnoses bottlenecks locally.
Open productWhat it does
About PreScale
PreScale is an open-source command-line load testing tool licensed under Apache-2.0 designed to evaluate application performance prior to release. Running locally on developer hardware without requiring separate load servers or test scripts, PreScale ramps closed-loop virtual users across HTTP/2 endpoints. It pinpoints the exact route that breaks first alongside the specific concurrency threshold where failures start. Using active probes, it classifies backend bottlenecks—such as connection pool limits, concurrency caps, or slow queries—and suggests targeted fixes through a deterministic engine.
- Availability:
- launched
- Access:
- free
- Format:
- software
- Platform:
- cli
Pricing at launch: Free to use across any tech stack with no user account required.
Core capabilities
Closed-Loop HTTP/2 Ramping
Simulates closed-loop virtual user traffic over HTTP/2 without requiring external load testing software or dedicated test servers.
Route Failure & Concurrency Pinpointing
Keep discovering
Related debuts
Continue with products that solve a similar problem or serve the same kind of maker.
