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MonDemand is an open source library that is used to log messages and statistics in order to monitor real-time metrics and events in applications. As opposed to many full-featured profiling systems, it is designed to be run in production, with a minimal impact on performance. By default, MonDemand uses the Light Weight Event System in order to log events to the network; however, developers can easily add additional transports to MonDemand to use the protocol of their choice.


When using the default network transport, MonDemand inherits the design features of the Light Weight Event System - non-blocking, best-effort delivery of monitoring events. This ensures that applications are not blocked with monitoring calls. Also, if logging events remotely, it provides a way to offload the processing of monitoring events to other machines.

Use Cases

The stream of events coming from applications using MonDemand are useful for a variety of purposes: