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An authorization library that supports access control models
...Currently, dozens of databases are supported, from MySQL, Postgres, Oracle to MongoDB, Redis, Cassandra, AWS S3. jCasbin is a powerful and efficient open-source access control library for Javaprojects. It provides support for enforcing authorization based on various access control models.
...Joblets guarantee productivity through reusability.
The framework is engineered in a multi-layered architecture on top on some of the most recognized open source projects of the global java community; consequently a steep learning curve and an open architecture for binding with other projects are ensured.