Developing Apama Applications > Developing Apama Applications in EPL > Implementing Parallel Processing > How contexts affect other parts of your Apama application > Using correlator plug-ins in parallel processing applications
Using correlator plug-ins in parallel processing applications
The standard MemoryStore, Time Format, Log File Manager, and Payload Extraction plug-ins are thread safe, which means that you can use them in parallel applications. The MemoryStore can be quite helpful in a parallel application and is very efficient when used simultaneously by multiple contexts.
For information about writing correlator plug-ins for use with parallel applications, see The EPL Plug-in APIs for C and C++ in Writing Correlator Plug-ins.
Note: The C class AP_Context, and the C++ class Context, which you use for correlator plug-in development, are completely different and unrelated to contexts that you define for parallel processing.
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