March 2008 will be a month of publicity for CouchDB. I will be giving a total of three presentations around the globe, the northern hemisphere, less then half of that, actually. Anyway.

March 1st, 2008 — Chemnitzer Linux Tage

As early as 9:00 a.m. on a Saturday morning, I’ll be giving the 45 minute version of my Next Generation Data Storage with CouchDB talk to a crowd of hopefully awake Linux enthusiasts. The conference is only 5€ (3€ for students), so be sure to show up! The presentation will be in German and so is the information page.

March 7th, 2008 — O’Reilly ETech — San Diego

This is a big one, and actually, they help sponsoring my flight to the US, so a big thanks upfront! In fact, this is a double session …

March 2008 will be a month of publicity for CouchDB. I will be giving a total of three presentations around the globe, the northern hemisphere, less then half of that, actually. Anyway.

March 1st, 2008 — Chemnitzer Linux Tage

As early as 9:00 a.m. on a Saturday morning, I’ll be giving the 45 minute version of my Next Generation Data Storage with CouchDB talk to a crowd of hopefully awake Linux enthusiasts. The conference is only 5€ (3€ for students), so be sure to show up! The presentation will be in German and so is the information page.

March 7th, 2008 — O’Reilly ETech — San Diego

This is a big one, and actually, they help sponsoring my flight to the US, so a big thanks upfront! In fact, this is a double session …

Yes, old news, but woohoo, big news. The Happy New Year is kicking off nicely. All the best for 2008!

Yes, old news, but woohoo, big news. The Happy New Year is kicking off nicely. All the best for 2008!

Yes, old news, but woohoo, big news. The Happy New Year is kicking off nicely. All the best for 2008!

This is a follow-up piece to an earlier rant:

We are hitting a few walls with a CouchDB deployment and both Damien and I are a bit puzzled. This posting tries to attract someone with a clue to help us out. Our problems might result from not understanding the documentation correctly, but with evidently inaccurate material, we stand little chance

Long story short: We’ve got it all sorted out.

Memory Hogging Spidermonkey

Sam Ruby relayed a hint by “a Mozilla Developer”. Invoking Spidermonkey with the -b parameter and a value of 1000000, we are able to keep the memory footprint constant. We haven’t measured how this impacts performance, though.

Crashing …

This is a follow-up piece to an earlier rant:

We are hitting a few walls with a CouchDB deployment and both Damien and I are a bit puzzled. This posting tries to attract someone with a clue to help us out. Our problems might result from not understanding the documentation correctly, but with evidently inaccurate material, we stand little chance

Long story short: We’ve got it all sorted out.

Memory Hogging Spidermonkey

Sam Ruby relayed a hint by “a Mozilla Developer”. Invoking Spidermonkey with the -b parameter and a value of 1000000, we are able to keep the memory footprint constant. We haven’t measured how this impacts performance, though.

Crashing …

This is a follow-up piece to an earlier rant:

We are hitting a few walls with a CouchDB deployment and both Damien and I are a bit puzzled. This posting tries to attract someone with a clue to help us out. Our problems might result from not understanding the documentation correctly, but with evidently inaccurate material, we stand little chance

Long story short: We’ve got it all sorted out.

Memory Hogging Spidermonkey

Sam Ruby relayed a hint by “a Mozilla Developer”. Invoking Spidermonkey with the -b parameter and a value of 1000000, we are able to keep the memory footprint constant. We haven’t measured how this impacts performance, though.

Crashing …

My first Podcast, yeah!

Early the a week I recorded a short introduction to CouchDB for PHP Abstract.

If you like to quote, or copy or anything (after all this is under a Creative Commons license), here’s the transcript:

CouchDB

CouchDB is a new database system that breaks with a lot of traditions. Prepare to be confused or even offended. While a lot is different from traditional data management systems, the core concepts should be familiar to you.

Try to forget, just for a moment, all you know about SQL, relations, replication and all simple and advanced techniques you use to solve your problems when it comes to data storage. Instead, remember the days when you were a beginning PHP developer (if you are a beginner, perfect). …

We are hitting a few walls with a CouchDB deployment and both Damien and I are a bit puzzled. This posting tries to attract someone with a clue to help us out. Our problems might result from not understanding the documentation correctly, but with evidently inaccurate material, we stand little chance. Here it goes.

Spidermonkey hogs memory

Or its garbage collection is a little ineffective. CouchDB uses Spidermonkey, Mozilla’s Javascript engine to create views on its databases. The user provides a Javascript function and CouchDB uses Spidermonkey to determine which documents to include in a View. The Javascript script that evaluates and executes the user’s function runs as a daemon.

We have a global variable there, map_results (declaration in line 19) that gets reset to {} for each document and map …