| Table of Contents |
|---|
Platform Description
The Fedora 4 platform is a ground-up reimagining of the Fedora repository architecture. We've built atop mature products in the content repository space to allow us to rapidly iterate to build a robust, scalable, and durable system.
...
- a different kind of object model that allows (and, even encourages) hierarchy
- "native" RDF expressions of object properties
- a RESTful REST API that is consistent and follow-your-nose
- integrated support for low-level fixity checks
- asynchronous, event-driven points of extensibility
Modeshape
Modeshape is an implementation of the JSR-283 Java API for content repositories ("JCR"). Fedora 4 wraps this Java API with our own REST and Java APIs.
ModeShape is a distributed, hierarchical, transactional, and consistent data store with support for queries, full-text search, events, versioning, references, and flexible and dynamic schemas. It is very fast, highly available, extremely scalable, and it is 100% open source and written in Java. Clients use
ModeShape is perfect for data that is organized in a tree-like hierarchical structure where related data is stored close together, where navigation to related content is just as common and important as fast key-based lookups or queries. The hierarchical organization is similar to a file system, making ModeShape a natural for storing files annotated with metadata. ModeShape can even automatically extract the structured information within the files so that clients can navigate or use typed queries to find files satisfying complex, structurally-oriented criteria. ModeShape is an excellent store for data with a complex schema, since the schema can vary over the database and evolve over time. ModeShape is the perfect distributed data store for all kinds of applications, including repositories, content management systems, historical data services, provisioning and governance systems, and metadata management systems.
Sequencers, binary stores, federation, etc
See also:
N Things to know about Modeshape (and JCR, and Infinispan)
Infinispan
Infinispan is the storage subsystem used by Modeshape for storing object structure, and (optionally) binary content. It supports cluster-based scale out and high availability, data persistence into a variety of CacheStore architectures (filesystem, JDBC database, Amazon S3), and distributed execution (including but not limited to e.g. Map/Reduce).
Fedora 4 ships with a handful of example Infinispan configurations to get up and running quickly.
clustering + clustering modes, locking, etc
Introduction
...