terraza de aravaca: JPA implementations comparison: Hibernate, Toplink Essentials, Openjpa, Eclipselink
http://terrazadearavaca.blogspot.com/2008/12/jpa-implementations-comparison.html

Vergleich verschiedener JPAs

In looking at your code, none of your queries actually return an objects. They are all count queries, returning a single number. Hardly a typical usage of object-relational mappings, makes the comparison not very useful.

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A client side JSON document store. Want to see this in Node.JS.

Sorta like a couch except smaller and outside, also, a client side JSON document store. Perfect for webkit mobile apps that need a lightweight, simple and elegant persistence solution.

"Sorta like a couch except smaller and outside, also, a client side JSON document store. Perfect for webkit mobile apps that need a lightweight, simple and elegant persistence solution."

"These two seem like an interesting combination. Imagine the possibilities...kill your database, simple POJO applications, free distributed transactions, clustered JVMs with limitless memory...it would make your hair would grow back, you'd get women, and become filthy rich...well...maybe not, but at least you'd have more fun writing software." -- Paul Stadig

a database implementing a dictionary, where every key is associated with a value. every single value has a type. The following types are supported: * Strings * Lists * Sets * Sorted Set (since version 1.1)

maybe the guy is not suitable to address such compare?

Persistent in-memory key value database compared to memcached

tructures and algorithms. Indeed both algorithms and data structures in Redis are properly choosed in order to obtain the best performance.