…me how useful it is. Suffice it to say, I just wish CouchDB would not dump all that Erlang trace into my log, but maybe a useful error message for a change. It works in some cases, but a lot of times, when the problem usually is as simple as a permissions problem, you're left scratching your head. {<0.84.0>,supervisor_report, [{supervisor,{local,couch_secondary_services}}, {errorContext,start_error}, {reason, {'EXIT', {undef, [{couch_auth_cache,start_link,[]}, …
- Me Dev, You Jane: Power CouchDB - Basic HTTP Handlers
- ricroberts: Create Your Own Semantic Web-enabled Blog
- Bamboo Blog: On-the-fly image handling with Dragonfly
- Luigi Montanez: Starting Back Up
- CaelumObject Developers' Blog: REST from scratch
- till's blog: CouchDB: checkpointing on view building
…is when I decided that RabbitMQ might be my best bet, I had heard great things about Erlang's capabilities in the scaling department. After much deliberation and studying, I decided to make the leap and use AMQP and Eventmachine to interact with RabbitMQ. The choice of AMQP was a no brainer, we already used daemon-kit and it has native AMQP support. The switch took less than a weekend to get up and running!
In the end, we went from two starling queue servers and …
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- 4 Lines of Code: RabbitMQ and AMQP in Ruby
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- Engine Yard Ruby on Rails Blog: Win a Motorola DROID Programming Contest: "Worst App Server Technology Ever"
Just a quick note — a rare spike of activity in my [sadly] dwindling ability to write anything on my blog...
I'll be speaking at DevNation Portland on July 10th, covering a technology I've become interested in lately: Riak . Riak is a robust and friendly key/value store for the web, built on top of Erlang (with a bit of C and Javascript thrown in). I'll focus primarily on the concepts at play in Riak, where/how it can fit into an application, and where …
- techno weenie: Nori: Node.js Riak wrapper
- Rails Envy » Home: Episode 104: Something New
- Spyced: Cassandra: Fact vs fiction
- till's blog: Introducing TillStore
- Blue Box Group: News: NoSQL Meetup - New Confirmed Date
- James on Software: Most NoSQL DBs Are Not Scalable
I started it in C++ and XML; there was no Erlang or anything like that. Eventually, we threw away the C++ codebase, and eventually we moved to JSON, JavaScript, and Erlang. We've gone through quite a lot of iterations to get to where we are.
We just founded Couchio, which is the company wrapped around CouchDB, last December. I moved my family out to California in January, and we're doing the whole startup thing in Silicon Valley. We're focusing on services …
- Damien Katz: Replication
- Open Sourcery: Paginating documents with couchrest and will_paginate
- Ruby Inside: Interesting Ruby Tidbits #32: DataMapper, Screencasts, IP Addresses, Euruko 2010 and more
- codahale.com: Ruby and Male Privilege
- Luigi Montanez: Starting Back Up
- Blue Box Group: News: NoSQL Meetup - New Confirmed Date
…Cassandra looks interesting as well. Considering they are Java not written in Erlang, a lot of people seem to like them anyways. Also, Eric Evans is a great presenter — kudos to him. I especially liked the part where he suggested to not use Cassandra for obvious reasons, but the inner geek disagreed.
I don't know why presentations by Nokia, are like that. I'm missing a little enthusiasm about work or project.
Bashing other projects sucks. Also, introducing yourself …
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- igvita.com: Easy Map-Reduce With Hadoop Streaming
- How Software is Built: Interview with Amr Awadallah - Cloudera CTO
- Heroku: Success Story: FlightCaster
- Rails Envy » Home: Rails Envy Podcast - Episode #093
- Aloha On Rails - Hawaii Ruby on Rails Conference - Waikiki - Oct 5-6 2009: Thinking in Map Reduce Video Now Online
…have some ups and downs, though. High points included Redis, Scheme, Erlang, and CoffeeScript. Lows included Cassandra and CouchDB, which I couldn't even get running in the allotted hour.
I created a simple Tumblr blog and posted to it after every new tech, which kept me accountable and spurred discussion on Twitter and at the office. My talk went over surprisingly well at DevNation ( here are my slides ), and I hope to give it again at future events.
- Vineet Gupta | Computer Programmer: NoSql Databases - Part 1 - Landscape
- Intridea - Company Blog: Friday Coffee Hour at Intridea
- paperplanes: There's Something About Redis
- RubyLearning Blog: Happynerds - Programming Links for Kids
- Riding Rails - home: Rails and the Enterprise
- techno weenie: Node.js For My Tiny Ruby Brain: Keeping Promises
I took the Riak Fast Track and really liked messing around with map reduce functions. So, I wrote nori , a node.js client.
Riak is a key/value store inspired by the Dynamo whitepaper. It has buckets, which contain resources identified by keys, with a REST API. Therefore, it feels a lot like S3, with added map reduce and link walking powers.
Riak is written in Erlang, but Basho decided to also support javascript for map reduce. …
- High Scalability: Paper: High Performance Scalable Data Stores
- Spyced: Cassandra: Fact vs fiction
- a work on process: Weekend Links
- A Fresh Cup: Double Shot #646
- paperplanes: Notes on MongoDB
- James on Software: Most NoSQL DBs Are Not Scalable
The more CPU in a server, the more beam processes. CouchDB (or Erlang) seem to take great advantage of this resource. I haven't really figured out a connection between CPU and general performance though because in my case memory and disk were always the bottleneck.
Memory
... seems to be another underestimated bottleneck. For example, I noticed that replication can slow down to a state where it seems faster to copy-paste documents from one instance to another when CouchDB is unable …
- Katz Got Your Tongue?: ActiveModel: Make Any Ruby Object Feel Like ActiveRecord
- ricroberts: Blink #1 - The first in a series of Link-Blogging posts
- Luigi Montanez: Starting Back Up
- Binary Logic: Authlogic: keeping you in the loop
- codahale.com: Ruby and Male Privilege
- James on Software: Most NoSQL DBs Are Not Scalable
An idea has become reality. Exactly two years after the blog post with the initial vision, a new version of GeoCouch is finished. It's a huge step forward. The first time the dependencies were narrowed down to CouchDB itself. No Python, no SpatiaLite any longer, it's pure Erlang. GeoCouch is tightly integrated with CouchDB, so you'll get all the nice features you love about CouchDB.
Awesome work Volker!
- till's blog: Small notes on CouchDB's views
- processi: ruote 2.1 released
- : Sammy.js, CouchDB, and the new web architecture
- Intridea - Company Blog: CouchDB-Lucene, CouchDBX, and CouchRest
- Katz Got Your Tongue?: ActiveModel: Make Any Ruby Object Feel Like ActiveRecord
- Engine Yard Ruby on Rails Blog: Key-Value Stores in Ruby: The Wrap Up
Recently I worked with Volker Mische to help him create a new R-Tree geo-spacial indexer for CouchDB (the details of which he'll be announcing soon).
And not only that, he took the time to write up a tutorial how to create you own customer indexer. If you wanted to write a new full text indexer in Erlang for CouchDB, this tutorial is the place to start. Awesome work!
http://vmx.cx/couchdb/tutorial/indexer.html
- paperplanes: NoSQL And You - Thoughts On Finding Right Partner In Chrime
- till's blog: PHP: So you'd like to migrate from MySQL to CouchDB? - Part I
- Me Dev, You Jane: My CouchDBX version
- processi: ruote 2.1 released
- : Sammy.js, CouchDB, and the new web architecture
- Intridea - Company Blog: CouchDB-Lucene, CouchDBX, and CouchRest