Record and replay the execution of your software
Debugging intermittent failures - whether in development, test or in production - takes time. It slows down development projects and frustrates customers...
What if you could record your program's execution as it fails and replay the recording offline any time anywhere?
Record programming errors
Live Recorder captures all non-deterministic data (down to instruction level) and recreates your application’s entire memory and the register state - on demand and with minimal overhead.
The recording represents a reproducible test case.
Live Recorder's core recording technology is language independent and compatible with most mainstream Linux distributions.
Replay functionality
Debug the recording
Once you have the recording file capturing a defect, you can view the recording to analyze execution history using UndoDB (Live Recorder’s reversible debugger functionality). Discover what your software really did and why.
Key features
Live Recorder features
Undo Live Recorder makes it possible to find and fix more defects faster, especially non-deterministic bugs, which rise in frequency as systems become more complex.
Live Recorder records non-deterministic data and recomputes deterministic data on-the-fly. Record, replay, and debug defects just as they happened during the original run – without needing to know in advance what you will want to look at.
What's new
NEW release: Live Recorder 5.0
Live Recorder 5.0 is a breakthrough in software flight recorder technology. It is the first solution that solves the costly problem of reproducing and debugging non-deterministic defects in multi-process systems. Enhancements include:
Multi-Process Correlation for Shared Memory
Shared memory corruption in a multi-process system can seem impossible to debug. This feature simplifies debugging by recording the exact order in which processes altered shared memory variables. Zero-in on specific variables and skip backwards to the last line of code - in any process - to have altered the variable.
Microservices support
Live Recorder 5.0 can record and replay the execution of individual Kubernetes and Docker containers to help resolve defects faster in microservices environments.
Thread Fuzzing
Non-determinism makes race conditions and other multi-threading issues hard to predict. When integrated into your test pipeline, Live Recorder 5.0 thread fuzzing exposes potential defects by randomizing thread execution to help reveal more race conditions, crashes, and other multi-threading defects.
How Live Recorder works
Record and replay program execution and quickly diagnose software failures in test or in production
Competitor comparison
Live Recorder vs traditional debugging
Live Recorder is the only solution that gives you data-driven insight into what your software really did before it failed. By recording a failed process down to instruction level, you get a 100% reproducible test case. Live Recorder can also capture intermittent, non-deterministic failures which cannot be tracked down in any other way.