Unclog the server bottleneck with active containers
12152Unclog the server bottleneck with active containershttp://www-106.ibm.com/developerworks/java/library/wa-actcont/?ca=dgr-jw766wa-actcontserver-side control architectures such as Java ServerFaces (JSF) or Struts, a majority of the control events must be handled on the server side to update the state of the control. For every user event, the entire page data is sent back to the server as part of the form submission. Even data that has not changed or is not affected by the user event is sent to (and back from) the server. It is obvious that handhelds, overburdened Web servers, and possibly wireless networks would benefit from the avoidance of redundant data processing in these instances; the question is how to implement a solution.Java > Tips and Tutorials > DevelopmentOct 11, 2006
This chapter provides tutorial notes on downloading, installing and setting up Java DB (Derby) server. Topics include downloading and installing Java DB 10.2.2; verifying Java DB execution environment; running Java DB in Network Server mode; using 'ij' to create database and tables.
Static types -- most programmers love them or hate them. Advocates boast that static types allow them to produce cleaner and more reliable code than they could without them. Detractors moan about the added complexity that static types require of a program.
Java applications do not have memory management issues, because the garbage collector of the Java Virtual Machine (JVM) takes care of all the storage issues. The garbage collector in the IBM JVM is based on the mark-sweep-compact (MSC) algorithm, where garbage collection (GC) takes place in three phases. At the end of the mark and sweep phases, free space is available, but there is a possibility of heap fragmentation. The compact phase alleviates the fragmentation problem by moving chunks of allocated space towards the lower end of the heap, helping create contiguous free memory at the other end.
server-side control architectures such as Java ServerFaces (JSF) or Struts, a majority of the control events must be handled on the server side to update the state of the control. For every user event, the entire page data is sent back to the server as part of the form submission. Even data that has not changed or is not affected by the user event is sent to (and back from) the server. It is obvious that handhelds, overburdened Web servers, and possibly wireless networks would benefit from the avoidance of redundant data processing in these instances; the question is how to implement a solution.
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