AlternativaCore is a system of servers for online multiuser media support over the internet.

Servers let clients applications to exchange information, synchronize data, support game logics, distribute resources.

Main features:

• cluster structure, easily scalable through new hardware plugging in;
• file versions support system;
• multilanguage support;
• own data transfer protocol created according to multiuser media requirements;
• modular structure, letting to add new functions easily;
• events logging system with statistics.

• Java 6.0;
• OSGI — modular structure support, "hot" hardware plugging in;
• Hibernate for DB handling;
• PostgreSQL — DB itself (system may use other DB);
• RMI — remote server components interaction;
• SVN — for versioned files storage;
• JUnit — unit testing;
• Apache MINA — net library;
• Terracotta — distributed cache;
• LDAP — user database;
• JMS — messaging system;
• OSGI cluster managing server.