Sequences can be used in any template string loaded from the scenario configuration. They are typically used to customize messages in a way that each message sent is unique.
Sequence only implements two methods. First,
reset() to reset the
Sequence to its initial
state, and second
publishNext() to publish the next value(s) in the
row to the provided properties. The Sequences are used heavily by many threads.
Therefore they must be thread-safe and handle the load smart.
A wrong example is the
NumberSequence which has the
publishNext() method synchronized. This makes a significant
overhead to the PerfCake performance.
Much better example is the
PrimitiveNumberSequence which uses
Each sequence can publish more values at once, each having its own unique key prefixed
with the value from the
sequenceId parameter of the