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Replay turns back time for QA


By Alex Handy
March 12, 2008 — 
Replay Solutions is pressing rewind on enterprise applications, effectively creating a TiVo for the QA department.

The company, this summer, will release Replay Team Edition, a QA tool that records and plays back software events.

Replay Solutions has been concentrating on video-game consoles since the company’s inception in 2004, said CEO Jonathan Lindo. After refining the product’s features, Replay Solutions has poured them into a version that targets enterprise Java developers.

Behind the scenes, Replay Team Edition takes a different approach to replayable event-monitoring than its competitors do. Among those competitors is VMWare, which introduced a product based on its virtualization platform that also records and replays software events.

But Replay is different, Lindo said. Conventionally, he explained, computers are considered deterministic, even though that’s not truly the case. What makes their behavior “non-deterministic is random sources of input, and random events such as I/O, keyboard and mouse input. Or it can be because of things like the scheduler or the memory manager's interrupts and callbacks. All those things can introduce non-determinism. If you can control all those elements, we can place that application into a deterministic state again, and guarantee the exact path of execution.”

Be Kind, Rewind
This focus on deterministic actions allows the company to assert that Replay Team Enterprise can save hours of application activity without requiring massive storage space. Replay's solution allows for a faster monitoring hook as well, Lindo added.

The software can also be used against live systems, where it can be loaded and implemented with only a 1 to 3 percent performance hit, noted Lindo. Included is an Eclipse plug-in that allows recorded sessions to be played back step by step with a debugger attached. As a result, developers can see exactly which line of code is being triggered at each step of the recording.

Replay Team Edition is available now and is priced at about US$35,000 for 10 users. A free version is coming that can record and play back but will not be able to export and share those recordings with others. For more information, visit www.replaysolutions.com.


Related Search Term(s): QA Testing, Replay


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