All releases of StreamCruncher

  •  21 Nov 2007 07:38
Avatar

    Release Notes: StreamCruncher is now an open source project, licensed under the LGPL.

    •  10 Oct 2007 14:01
    Avatar

      Release Notes: Correlation Queries (alert..when..) and Queries with just one Stream have been re-architected to perform better and do not use the Database. The RowSpec class has changed and the API accepts Java Data types instead of Database specific types. Correlation Queries can process 168,000 Events per second on a 1.8 GHz Centrino.

      •  21 Aug 2007 09:11
      Avatar

        Release Notes: Correlation Queries ( alert..when..) have been re-architected to perform better. "case..when.., first, distict, limit" clauses, "group by", and other Group functions are temporarily not working. OutputSession's return value is now List<Object[]> instead of Object[][]. A new CorrelationPerfTest test class performs a load test where four Event Streams are monitored by three different Correlation Queries.

        •  18 Jul 2007 14:57
        Avatar

          Release Notes: The pre-filter for input event streams now supports <, >, !=, =, *, /, +, -, "in (..)", "not in (..)", "and", and "or". The "in" clause can refer to an SQL sub-query. Such sub-queries are cached by the kernel to improve performance. An additional property, cacherefresh.threads.num, can be configured to specify the number of sub-query cache processing threads to use. Two new test cases have been added to test the new features: H2StartupShutdown3Test and ThreeEventOrderTest.

          •  04 Jul 2007 18:04
          Avatar

            Release Notes: This version is the result of a major refactoring job. The API has been greatly simplified. The internal architecture has changed considerably, resulting in a vast improvement in performance. The TimeWindowFPerfTest (single Query on a Stream) can do 25,500 events per second on a 1.6 GHz Centrino.

            •  29 May 2007 17:26
            Avatar

              Release Notes: This release comes with a new feature/syntax to perform efficient Self-Joins over Streams. Self-Joins are useful when the Events in a Window have to be scanned or matched against Events from the same or other Windows defined as part of the same Partition clause. The StockPriceComparisonTest.java TestCase demonstrates the use of this new syntax. More details are available in the "StreamCruncher Basics" documentation.

              •  22 Apr 2007 18:49
              Avatar

                Release Notes: This version includes support for the Oracle 10g database.

                •  14 Apr 2007 10:14
                Avatar

                  Release Notes: This release fixes Subtle Concurrency bugs and makes TimeWindowFPerfTest capture more metrics.

                  •  10 Apr 2007 14:57
                  Avatar

                    Release Notes: This version does not have any changes to the code. The syntax diagram was updated. Javadoc was added to the Web site.

                    •  08 Apr 2007 06:02
                    Avatar

                      Release Notes: The $diff clause was added for built-in aggregate functions, along with the custom Baseline Provider feature. ClusterHealthTest demonstrates this new feature. The Custom Window size Provider should now be declared in the Query statically. TimeWFPartitionWinSizeProviderTest demonstrates this change. A simple class, StandAloneDemo, shows how to run a sample using just the Java main(..) method. sc_run_standalone.bat can be used to run the Demo.

                      Screenshot

                      Project Spotlight

                      episoder

                      A tool to tell you about new episodes of your favourite TV shows.

                      Screenshot

                      Project Spotlight

                      BalanceNG

                      A modern software IP load balancer.