## Performance {#performance}
-Rspamd was designed to be fast. The core of rspamd is written in `C` and uses event-driven model that allows to process multiple messages simultaenously and without blocking.
+Rspamd is designed to be fast. The core of rspamd is written in `C` and uses event-driven model that allows to process multiple messages simultaenously and without blocking.
Moreover, a set of techniques was used in rspamd to process messages faster:
* **Finite state machines processing** - rspamd uses specialized finite state machines for the performance critical tasks to process input faster than a set of regular expressions.