AstLogger Redundancy Design
New version of AstLogger can be configured with redundancy support. Three server roles are designed, they are “active”, “backup” and “parallel”. I use the following diagram to illustrate the different combination of redundancy implementation.
Active Hot-Standby Recording
Two AstLogger servers are required for this setup. The two AstLogger instances connect to different AES to avoid single point of failure. Also the two AstLogger instances use different pool of phantom devices. The “active” AstLogger always trigger recording when it is alive. The “backup” AstLogger only trigger recording when it detects the “active” AstLogger is failure. Only one voice file is generated for each call by this implementation.
Active Active Recording
Two AstLogger servers are required for this setup. The two AstLogger instances connect to different AES to avoid single point of failure. Also the two AstLogger instances use different pool of phantom devices. The “active” AstLogger always trigger recording when it is alve. The “parallel” AstLogger always start the recording right after the “active” AstLogger. Two voice files are generated for each call by this implementation.
1.4.10 Beta 1
You can download 1.4.10 beta 1 for testing of this new feature. A new parameter called “al_serverrole” is introduced for this purpose, the value can be “active”, “backup” and “parallel”.
