Gpars - Groovy parallel systems
Gpars is a framework which provides straightforward Java or Groovy-based APIs to declare, which parts of the code should be performed in parallel. Collections can have their elements processed concurrently, closures can be turned into composable asynchronous functions and run in the background on your behalf, mutable data can be protected by agents or software transactional memory.
GPars helps to create several independent Actors, which consume messages passed to them and communicate with other actors by sending them messages.
comments powered by Disqus
Akka is the platform for the next generation event-driven, scalable and fault-tolerant architectures on the JVM. It helps to write simpler correct concurrent applications using Actors, STM & Transactors. It could scale out on multi-core or multiple nodes using asynchronous message passing. For fault-tolerance it adopts the Let it crash or Embrace failure model to build applications that self-heals, systems that never stop.
S4 is a general-purpose, distributed, scalable, partially fault-tolerant, pluggable platform that allows programmers to easily develop applications for processing continuous unbounded streams of data. S4 has been deployed in production systems at Yahoo to process thousands of search queries per second.
Drizzle is a database optimized for Cloud infrastructure and Web applications. It is designed for massive concurrency on modern multi-cpu architecture. Its memory usage is optimized for increased performance and parallelism. The Drizzle team has removed non-essential code, re-factored the remaining code into a plugin-based architecture and modernized the code base moving to C++.
Icinga is an enterprise grade open source monitoring system which keeps watch over networks and any conceivable network resource, notifies the user of errors and recoveries and generates performance data for reporting. Icinga is a fork of Nagios and is backward compatible. So, Nagios configurations, plugins and addons can all be used with Icinga. Icinga sends notifications via email, SMS, Twitter, instant messaging. It has more features than Nagios. It is distributed and scalable.
Citadel is a collaboration suite (messaging and groupware). It provides support for Email, Calendaring/Scheduling, Address books, Bulletin boards, Mailing List Server, Instant Messaging, Wiki, Multiple domain support.
Neo4j is a high-performance graph engine with all the features of a mature and robust database. It is a graph database, storing data in the nodes and relationships of a graph. It includes the usual database features like ACID transactions, durable persistence, concurrency control, transaction recovery, high availability.
Twisted is an event-driven networking engine written in Python. Twisted makes it easy to implement custom network applications, both servers and clients. It also supports many common network protocols, including SMTP, POP3, IMAP, SSHv2, DNS and lot more. The twisted.web webserver is a scalable, small-footprint web server that's easy to configure. It's efficient enough to serve a high-traffic website.
Scribe is a server for aggregating log data that's streamed in real time from clients. It is designed to be scalable and reliable. It is developed and maintained by Facebook. It is designed to scale to a very large number of nodes and be robust to network and node failures. There is a scribe server running on every node in the system, configured to aggregate messages and send them to a central scribe server (or servers) in larger groups.
Monkey HTTP Daemon, is a very Small, Fast and Lightweight open source Web Server for GNU/Linux. It has been designed to be very scalable with low memory and CPU consumption, the perfect solution for embedded and high production environments. It is asynchronous and event driven. It supports virtual hosts, SSL, Logs etc.