Search
-
Recent Posts
Categories
Archive
- January 2012
- December 2011
- November 2011
- October 2011
- August 2011
- July 2011
- December 2010
- November 2010
- September 2010
- July 2010
- June 2010
- May 2010
- March 2010
- December 2009
- November 2009
- October 2009
- August 2009
- July 2009
- June 2009
- May 2009
- August 2008
- June 2008
- May 2008
- March 2008
- February 2008
- December 2007
- November 2007
- October 2007
- August 2007
- June 2007
- May 2007
- March 2007
- November 2006
- August 2006
- July 2006
- February 2006
- October 2005
- September 2005
- July 2005
- June 2005
- May 2005
- April 2005
- March 2005
- December 2004
- June 2004
- March 2004
- February 2004
- December 2003
- October 2003
- June 2003
Category Archives: Architecture
Good concurrency changes the game
A long time before I seriously got into using distributed version control systems (DVCS) such as Bazaar and Git for developing software, it was already well known to me how the mechanics of these systems worked, and why people benefited … Continue reading
Posted in Architecture, Design, Go, Project, Snippet
4 Comments
Death of goroutines under control
Certainly one of the reasons why many people are attracted to the Go language is its first-class concurrency aspects. Features like communication channels, lightweight processes (goroutines), and proper scheduling of these are not only native to the language but are … Continue reading
Posted in Architecture, Design, Erlang, Go, Project, Snippet, Test
5 Comments
Ensemble, Go, and MongoDB at Canonical
About 1 year after development started in Ensemble, today the stars finally aligned just the right way (review queue mostly empty, no other pressing needs, etc) for me to start writing the specification about the repository system we’ve been jointly … Continue reading
Posted in Architecture, C/C++, Cloud, Design, Go, PostgreSQL, Project, Python
7 Comments
Efficient algorithm for expanding circular buffers
Circular buffers are based on an algorithm well known by any developer who’s got past the “Hello world!” days. They offer a number of key characteristics with wide applicability such as constant and efficient memory use, efficient FIFO semantics, etc. … Continue reading
Vector clock support for Go
One more Go library oriented towards building distributed systems hot off the presses: govclock. This one offers full vector clock support for the Go language. Vector clocks allow recording and analyzing the inherent partial ordering of events in a distributed … Continue reading
Posted in Architecture, Cloud, Go, Project, Snippet
Leave a comment
Integrating Go with C: the ZooKeeper binding experience
ZooKeeper is a clever generic coordination server for distributed systems, and is one of the core softwares which facilitate the development of Ensemble (project for automagic IaaS deployments which we push at Canonical), so it was a natural choice to … Continue reading
Posted in Architecture, Article, C/C++, Go, Project, Snippet
2 Comments
Removing seatbelts with the Go language for mmap support
Continuing the sequence of experiments I’ve been running with the Go language, I’ve just made available a tiny but useful new package: gommap. As one would imagine, this new package provides access to low-level memory mapping for files and devices, … Continue reading
Posted in Architecture, Go, Python, Snippet
6 Comments
Interfaces and the design of software
A while ago Martin Pool made a very interesting post on the design of interfaces, inspired by a talk from Rusty Russel from 2003. Besides the interesting scale of interface quality explained there, this is a very insightful comment, often … Continue reading
Posted in Architecture, Article, Test
Leave a comment
Gocheck: A rich testing library for Go
It’s time to release my “side project” which has been evolving over the last several months: Gocheck. I’ve been watching Go for some time, and have been getting more and more interested in the language. My first attempt to write … Continue reading
Posted in Architecture, Go, Project, Test
4 Comments
Integrating IRC with LDAP and two-way SMSing
A bit of history I don’t know exactly why, but I’ve always enjoyed IRC bots. Perhaps it’s the fact that it emulates a person in an easy-to-program way, or maybe it’s about having a flexible and shared “command line” tool, … Continue reading