01
Apache KafkaKafka fundamentals: records, partitions and consumer position
Build a precise mental model of Kafka before operating it: immutable records, partition-local ordering, offsets, replication, producers, consumer groups and replay.
dFlowIQ learning centre
Understand the systems behind the stream.
Original technical guides written by dFlowIQ Labs. Learn the underlying concepts here, then use the separate product manual for step-by-step application instructions.
Six complete guides
From first principles to safe operation.
Every article is self-written. External standards and vendor documentation are used only to verify facts and are transparently credited at the end of each guide.
02
Schema RegistrySchema Registry and safe contract evolution
Understand subjects, versions, schema IDs and compatibility direction, then review Avro changes safely with dFlow~IQ.
03
Data formatsSerialization and Kafka wire formats
Learn what Kafka actually stores, how JSON, Avro and Schema Registry framing differ, and how to choose or debug serializers in dFlow~IQ.
04
Quality engineeringTesting event-driven workflows without timing guesses
Design bounded Kafka integration tests with fixtures, baseline offsets, correlation, eventual assertions and meaningful negative checks.
05
SecuritySecuring Kafka and Schema Registry connections
Separate encryption, authentication and authorization; configure TLS, SASL and Registry access; and troubleshoot the connection layer safely.
06
OperationsOperating Kafka topics deliberately
Design partitions, replication, retention, cleanup and message limits as an operational contract, then change and verify them safely.