Oracle Coherence Review

​In-memory data grid and distributed caching are valuable but Coherence cluster is problematic

What is most valuable?

In-memory data grid and distributed caching.

How has it helped my organization?

It was suited for stock exchange marketing software, improved performance.

What needs improvement?


For how long have I used the solution?

About 3 years.

What do I think about the stability of the solution?

Yes, there is a big problem in Coherence cluster. For example, a master, because of connection issues, does not announce its mastery to a slave; slave becomes a master, then two masters appears in cluster, and the whole cluster dies.

What do I think about the scalability of the solution?


How are customer service and technical support?

Two out of 10. They always look at you innocently and say everything is fine. Only when you send all the core dumps etc. do they start to look into the problem, and it takes from two months to half a year to fix problems.

Which solution did I use previously and why did I switch?

Yes, I used to use Redis, Aerospike, Cassandra, etc. Why coherence? It was a company decision.

How was the initial setup?

Setup is easy.

What's my experience with pricing, setup cost, and licensing?

Product is too expensive and support is poor. There are better products.

Which other solutions did I evaluate?

Nope, it was a company decision to use Coherence, and I did not have influence on that decision.

What other advice do I have?

Invest in your network if you use Coherence cluster. Serious!

Which version of this solution are you currently using?

**Disclosure: I am a real user, and this review is based on my own experience and opinions.
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