MigratoryData exposes a simple publish/subscribe API with libraries for the most popular platforms and languages, including iOS, Android, JavaScript, Java, C#, C++, Node.js, Python, PHP, and more.

The JavaScript library extends real-time messaging to any web browser. It uses the WebSockets standard. For the old browsers without WebSockets, messages are still pushed via techniques that use a single persistent TCP connection, like WebSockets do, to achieve low message latencies.

A single MigratoryData instance can handle 10 million concurrent users with substantial outgoing messaging traffic, of the order of 1 Gbps. Besides, MigratoryData can be clustered to scale horizontally.

Both high vertical scalability and linear horizontal scalability provide our customers with large cost savings as they can handle considerably more users and message volumes with less hardware and less maintenance.

MigratoryData implements active/active clustering, replication, and distributed in-memory caching to achieve guaranteed message delivery despite hardware failures or network disconnections.

Moreover, MigratoryData is architected to achieve high scalability without sacrificing guaranteed message delivery as detailed in the paper Reliable Messaging to Millions of Users with MigratoryData.