Joe Armstrong posted a summary of a recent discussion on the erlang-questions mailing list about the problems of the RPC (Remote Procedure Call) mechanism, where Steve Vinoski explained his opinions.
Joe added his opinion as well and explained the Erlang way of handling remote calls.
Steve then wrote about Joe's summary in this article.
Friday, May 30, 2008
Thursday, May 29, 2008
Erlang by Example - Screencasts with Kevin Smith
Pragmatic offers a series of commercial videos, "Erlang by Example - Screencasts with Kevin Smith".
It is intended to help learning Erlang by going through an example project, a chat application.
So far there are three episodes of about 1/2 hour, priced at $5.
It is intended to help learning Erlang by going through an example project, a chat application.
So far there are three episodes of about 1/2 hour, priced at $5.
Sunday, May 18, 2008
More Threads, More Trouble?
My Google Alert on Erlang spew out this article: More Threads, More Trouble?
It starts with the observation that we move from increasing CPU clock speed to an increasing number of cores and then continues with a brief overview of prominent approaches to add concurrency to software systems / concurrent computing:
It starts with the observation that we move from increasing CPU clock speed to an increasing number of cores and then continues with a brief overview of prominent approaches to add concurrency to software systems / concurrent computing:
- time-sharing
- multi-processing / multi-tasking
- multi-threading
- shared memory
- OpenMP / MPI
- futures
- message passing (with Occam and Erlang mentioned)
- Communicating Sequential Processes (CSP)
- transactional memory / software transactional memory (STM)
Saturday, May 17, 2008
Facebook Chat
Found at Yariv's Blog: Facebook Chat is an article about the technology behind the Facebook social network.
They have a large web application with up to 70 Million users and want to provide them with presence information (like: "I am online", "I am busy", "I am away", "I am offline").
As the bidirectional information channel between the user's web browser and the Facebook servers they use BOSH, the XMPP way of binding XMPP via HTTP requests. The requests for BOSH are handled by a web server implemented in Erlang.
They have a large web application with up to 70 Million users and want to provide them with presence information (like: "I am online", "I am busy", "I am away", "I am offline").
As the bidirectional information channel between the user's web browser and the Facebook servers they use BOSH, the XMPP way of binding XMPP via HTTP requests. The requests for BOSH are handled by a web server implemented in Erlang.
Erlang article in German iX Magazine
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