Apama 10.3 | Apama Documentation | Developing Apama Applications | Developing Apama Applications in EPL | Working with Streams and Stream Queries | Troubleshooting and stream query coding guidelines
Troubleshooting and stream query coding guidelines
Prefer on statements to from statements
Know when to spawn and when to partition
Filter early to minimize resource usage
Avoid duplication of stream source template expressions
Avoid using large windows where possible
In some cases prefer retain all to a timed window
Prefer equi-joins to cross-joins
Be aware that time-based windows can empty
Be aware that fixed-size windows can overflow
Beware of accidental stream leaks
This section provides high-level guidelines for writing stream query applications that implement best practices.

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