4. DEFINITION OF TIMEDEFINITION OF TIME
"The inde nite continued progress of
existence and events in the past, present
and future regarded as a whole"
Oxford Dictionary
5.
6. "A continuous, measurable quantity in
which events occur in a sequence
proceeding from the past through the
present to the future"
Science Dictionary
7. EVENT SOURCINGEVENT SOURCING
With event sourcing, instead of storing the “current”
state of the entities that are used in our system, we
store a sequence of events that relate to these entities.
Events are immutable
8. LOGLOG
A Log is immutable, ordered, append-only and
persistent data structure. It’s a very simple structure,
but it is very powerful.
Logs have a speci c purpose: they record what
happened, when and where.
9. KAFKAKAFKA
Kafka is a distributed streaming platform
Order is guaranteed within a partition in a topic.
Each partition is a log.