Reuse And Reduce Process Memory
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Key: ODE-586
URL: https://issues.apache.org/jira/browse/ODE-586
Project: ODE
Issue Type: Improvement
Components: Axis2 Integration, BPEL Compilation/Parsing, BPEL Runtime
Affects Versions: 1.2
Reporter: Karthick Sankarachary
Assignee: Karthick Sankarachary
Fix For: 1.3.1
This is a meta issue to track all solutions geared towards reducing the
footprint of processes. Up until now, memory optimization of processes has been
an afterthought, and that calls for a change. There are a number of ways in
which we can reduce the in-memory size of processes, including but not limited,
to the following:
a) Employ a flyweight pattern to share identical resources within the process
model. This is analogous to the approach taken by string interning, only we
want to it to be more generic.
b) Refactor one or more parts of the process model in terms of a leaner and
meaner data structure. Since this may result in a structural change in the
serialized bytes of the process, care should be taken to maintain backwards
compatibility.
c) Reuse shared resources across different process models. This involves
determining whether or not a resource is shareable, and if so, storing them in
a system-wide cache. A reference counting mechanism may be used to manage the
lifecycle of the cache.
In the following comment, we will describe a solution based on approach (a).
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