Oracle Coherence 3.5

Summary

In this chapter, you have learned how to query Coherence caches and how to perform aggregations on the data within the cache. We have covered built-in filters and aggregators and learned how to build custom ones.

We also talked about indexes and the impact they have on query performance. I cannot stress enough how important indexes are—make sure that you always use them and you will avoid a lot of potential performance problems.

In the next chapter, we will look at the remaining methods defined by the InvocableMap and learn one of the most important Coherence features from the scalability and performance perspective—a feature that allows us to process data in place and in parallel across the cluster.