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New WebsitePlease visit our website, http://www.twitterizer.net Are you getting a lot of HTTP 401 error codes? Do your updates say "via Twitterizer"? That means you've been using Twitterizer Version 1 which uses BASIC authentication. BASIC Authentication has been scheduled for removal from Twitter for months. During the month of August, the hourly limit on the number of updates that is allowable from applications using BASIC authentication is to be lowered every day. On August 31, BASIC authentication will no longer function AT ALL. Twitterizer2 began development in May of this year to support OAuth, the only authentication protocol to be supported after the BASIC auth shutdown. I've done everything I could think to get the word out without violating Twitter's usage policy (I actually got a warning sending out too many notifications). Head over here for more information.
Memcached is high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. Memcached is an in-memory key-value store for small chunks of arbitrary data (strings, objects) from results of database calls, API calls, or page rendering.
HBase provides support to handle BigTable - billions of rows X millions of columns. It is a scalable, distributed, versioned, column-oriented store modeled after Google's Bigtable and runs on top of HDFS (Hadoop Distributed Filesystem). It features compression, in-memory operation per-column. Data could be replicated between the nodes. HBase is used in Facebook and Twitter.
ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files. It's widely used to build languages, tools, and frameworks. From a grammar, ANTLR generates a parser that can build and walk parse trees. Twitter search uses ANTLR for query parsing, with over 2 billion queries a day.
The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model. Cassandra is suitable for applications that can't afford to lose data. Data is automatically replicated to multiple nodes for fault-tolerance.
Spring is an Application framework which has Inversion of Control container, Aspect-oriented programming framework, Data access, Transaction management, Model-view-controller for web, Remote access framework (RPC) and lot more. It is well integrated with Toplink, Hibernate, JDO, and iBATIS.
This project provides a full set of libraries to manage VMware Infrastructure and vSphere. 2.0+ includes a new Web Service engine much faster/smaller than Apach AXIS. Start @ http://vijava.sf.net Blog @ http://doublecloud.org Twitter: @sjin2008