What is Schema dictionary is all about and how it works.

1. What is Schema Registry
Azure Schema Registry is a feature of Event Hubs, which provides a central repository for
schemas for event-driven and messaging-centric applications. It provides the flexibility for your
producer and consumer applications to exchange data without having to manage and share
the schema.
- Azure Eventhubstake bytesand publishthem
- No Validation
The need for a schema registry
 What if the producersendsbad data?
 What if a fieldgetsrenamed?
 What if the data format changesfromone day to another?
ConsumerBreak!!!!
 We need datato be self-describable.
 We needtobe able to evolve datawithoutbreakingdownstreamconsumers.
 We needschemasanda schemaa registry!
 What if the Brokerswere verifyingthismessage theyreceive?
 If wouldbreakwhatmakesso good.
1. Azure eventhubdoesnotparse or evenreadyourdata.
2. Takesbytesas an inputwithout evenloadingthemintomemory.

2. 3. Azure eventhubdistributesbytes.
 The Schema Registry mustbe a separate component
 ProducersandConsumers needstobe able totalk to it.
 The schema registrymustbe able torejectbad data.
 A commondata formatmust be agreedupon
Confluentdataregistry
Apache Avrofor data format
 Avrois data serialization system. Itisdefinedbythe schema.
 Avrocan be viewed asJsonwithaschemaattached to it.
How to create Schema for Event hub