Oren Eini

aka Ayende Rahien

Oren Eini

CEO of RavenDB

a NoSQL Open Source Document Database

Get in touch with me:

oren@ravendb.net

+972 52-548-6969

Posts: 7,546

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RavenDB Workshops - Deep dive into practical use of Document Data Modeling

Nov 06 2013

Why Voron has a Write Ahead Journal, not a Write Ahead Log

time to read 1 min | 94 words

Most of the database literature talks about Write Ahead Log, or WAL for short. Voron uses a Write Ahead Journal. And the reason isn’t technical. The reason is human.

I can’t tell you just how many times I have had to deal with people who send me the RavenDB transaction logs instead of the debug log.

Calling what Voron is doing a Journal means that we have a very clear separation between the things we do to keep the data, and the things we output to inform the user what is actually going on.

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06 Nov 2013
21:31 PM

Alessandro Riolo

Kudos! I had to face the same issue countless time ...

p.s.: having issues commenting with Chrome and Safari on Ipad

07 Nov 2013
15:34 PM

Howard Chu

Yeah, we get the same thing with BerkeleyDB in OpenLDAP all the time. Yet another reason I hate logs of any kind.

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RavenDB 7.1: Next-Gen Pagers - 4 days from now
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