This document provides an overview of schedulers and timers in Akka. It discusses how schedulers allow tasks or messages to be run or sent to actors at defined points in the future, either single executions or periodically. It describes two types of scheduling delays - fixed-delay and fixed-rate execution. Timers are used specifically for scheduling within actors and ensure schedules continue if an actor restarts. The document demonstrates setting up single and periodic timers using the Timers trait and describes the actor lifecycle.