Cluster Deployment

Prototype Deployment

The following diagram shows the kind of architecture that is typical for a production system:

The key points depicted in the diagram are:

• The platform is deployed across multiple servers.
• A Load Balancer distributes traffic across the web servers.
• Apache httpd is the front-end web server, and LongJump is the application server.
  Learn more: Configuring Apache to Serve Static Content
• Memcached servers reduce response time by caching data in memory.
  Learn more: Configuring memcached
• The suite of memcached servers are accessed by all LongJump servers, backend as well as front end. (Having one memcached server for each LongJump server is a common pattern, but is not strictly necessary.)
• The critical backend processes shown here (import, export, and scheduling, which uses quartz) are all being run from a single LongJump instance. But additional servers can be employed, as load demands.
  Learn more: Managing Backend Services
• Document storage (which includes pictures and image files) is managed separately from the database.
• The database is running on its own server, for added performance.
  Learn more: Configuring MySQL to Run on a Separate Server
• The primary database instance and the replication instance are each running on separate servers, both for reliability and for performance of read-intensive operations.
  Learn more: Using Replication with Different Master and Slave Storage Engines
• Requests that access and update, whether coming from a user or a backend process, go to the primary database, while read-intensive operations (backups, reports, exports) are executed on the replicated database.
  Learn more: Running Reports Using a Replicated Database Server.