Symisc Vedis

An Embeddable Datastore Engine

Public forum

Vedis Public Discussions: Quick, general and technical discussions on using and troubleshooting Vedis. There is no need to register in the Vedis Forum, simply enter a name and post your questions.

Professional Support

Proprietary, licensed Vedis extensions are available for a fixed one time fee, the available extensions are:

Contact for pricing information.

Contribute to the Vedis development

If you want to involve in the Vedis development process, please sign-up and post a message in the Vedis devel mailing list or send an email to

If you have or can write a binding for a foreign programming language, again post a message in the Vedis forum or send an email to

Bug reporting

Vedis have grown substantially since the beginning. At the time of writing, there are about 20000 lines of source code and by the time you read this it has probably grown even more.

Vedis is a fairly stable and extensively tested product, but minor bugs may still occurs. Please, read the section below on how to submit bug reports.

1.0 Where to report

Try to report an as detailed report using the online bug tracking system over at:
(but please read the sections below first before doing that).

1.1 What to report

When reporting a bug, you should include all information that will help us understand what's wrong, what you expected to happen and how to repeat the bad behavior. You therefore need to tell us:

- your operating system's name and version number

- what version of Vedis you're using

- Vedis compile-time options such as if threading support is enabled and so on.

and anything and everything else you think matters. Tell us what you expected to happen, tell use what did happen, tell us how you could make it work another way. Dig around, try out, test. Then include all the tiny bits and pieces in your report. You will benefit from this yourself, as it will enable us to help you quicker and more accurately.

1.2 Vedis problems

First, post all Vedis problems on the public forum or the Vedis-users mailing list.

Tell us the Vedis version and your operating system. Tell us the name and version of all relevant sub-components.

Showing us a real source code example repeating your problem is the best way to get our attention and it will greatly increase our chances to understand your problem and to work on a fix (if we agree it truly is a problem).

Lots of problems that appear to be Vedis problems are actually just abuses of the Vedis API or other malfunctions in your applications. It is advised that you run your problematic program using a memory debug tool like valgrind or similar before you post memory-related or "crashing" problems to us.

1.3 Who will fix the problems

If the problems or bugs you describe are considered to be bugs, we want to have the problems fixed.

But please do not assume that you can just lump over something to us and it will then magically be fixed after some given time. Most often we need feedback and help to understand what you've experienced and how to repeat a problem. Then we may only be able to assist YOU to debug the problem and to track down the proper fix.

1.4 How to get a stack trace

First, you must make sure that you compile all sources with -g and that you don't 'strip' the final executable. Try to avoid optimizing the code as well, remove -O, -O2 etc from the compiler options.

Run the program until it cores.

Run your debugger on the core file, like '<debugger> Vedis_app core'. <debugger> should be replaced with the name of your debugger, in most cases that will be 'gdb', but 'dbx' and others also occur.

When the debugger has finished loading the core file and presents you a prompt, enter 'where' (without the quotes) and press return.

The list that is presented is the stack trace. If everything worked, it is supposed to contain the chain of functions that were called when curl crashed. Include the stack trace with your detailed bug report. It'll help a lot.

1.5 Bugs in Vedis bindings

  You should primarily approach the team that works on that particular binding and see what you can do to help them fix the problem.

Symisc Systems
Copyright © Symisc Systems