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OpenCDN aims at the development of an application-level Content Delivery Network, suitable for replication and splitting of live and recorded multimedia content. It uses Relay technology, which splits incoming media packets for each downstream flow. Media distribution is hierarchically arranged among participating Nodes, coordinated by a centralized control unit.
It could deliver of Live Streaming contents to millions of viewers. Its development is based on Apple Darwin Streaming Server.
Infinispan is an extremely scalable, highly available key/value NoSQL datastore and distributed data grid platform. The purpose of Infinispan is to expose a data structure that is highly concurrent, designed ground-up to make the most of modern multi-processor/multi-core architectures while at the same time providing distributed cache capabilities. Infinispan offers enterprise features such as efficient eviction algorithms to control memory usage as well as JTA compatibility.
Memcached is high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. Memcached is an in-memory key-value store for small chunks of arbitrary data (strings, objects) from results of database calls, API calls, or page rendering.
HAProxy is a fast and reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications. It is particularly suited for web sites crawling under very high loads while needing persistence or Layer7 processing. Supporting tens of thousands of connections is clearly realistic with todays hardware.
Varnish Cache is a web application accelerator also known as a caching HTTP reverse proxy. You install it in front of any server that speaks HTTP and configure it to cache the contents. Varnish Cache is really, really fast. It typically speeds up delivery with a factor of 300 - 1000x, depending on your architecture.
Coral is a peer-to-peer content distribution network. Sites that run Coral automatically replicate content. Using modern peer-to-peer indexing techniques, CoralCDN will efficiently find a cached object if it exists anywhere in the network.
Red5 is an Open Source Flash Server written in Java that supports Streaming Video (FLV, F4V, MP4, 3GP), Streaming Audio (MP3, F4A, M4A, AAC), Recording Client Streams (FLV and AVC+AAC in FLV container), Shared Objects, Live Stream Publishing,
Remoting Protocols: RTMP, RTMPT, RTMPS, and RTMPE.
web2py is a full-stack framework for rapid development of fast, scalable, secure and portable database-driven web-based applications. This framework is based on Model-View-Controller design and it has support to Server-side form validation and postbacks. It has the ability to generate forms from database tables and it includes an extensive set of validators.
Openmeetings provides video conferencing, instant messaging, white board, collaborative document editing and other groupware tools using API functions of the Red5 Streaming Server for Remoting and Streaming.
Ehcache is an open source, standards-based cache used to boost performance, offload the database and simplify scalability. Ehcache is robust, proven and full-featured and this has made it the most widely-used Java-based cache.