#data (3)
· 9 min read
Data Exchange Formats: From JSON to Protobuf
A deep dive into data exchange formats: where JSON lives, why XML still matters, what makes YAML great, and when it is time to switch to binary Protobuf, Avro, and MessagePack — tied to APIs and message brokers.
· 10 min read
SQL in Practice: Installing PostgreSQL and Writing Your First Queries
A hands-on SQL guide for analysts and IT specialists: install PostgreSQL locally and write your first queries — from CRUD and JOINs to aggregates and transactions.
· 4 min read
Message Brokers — the Nuances
What a message broker actually is, and how the three classic solutions — RabbitMQ, ActiveMQ and Kafka — differ: protocols, message models, delivery guarantees and partitions.