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Elasticsearch or Rockset for Real-Time Analytics: How Much Query Flexibility Do You Have?

Rockset

Joins are often used in real-time analytics applications to combine streaming data (usually representing events) with static data (like customer information). With Elasticsearch, joins are not a first class citizen and many teams end up denormalizing their data to model relationships.

SQL 40
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The Good and the Bad of Apache Kafka Streaming Platform

AltexSoft

This enables systems using Kafka to aggregate data from many sources and to make it consistent. Instead of interfering with each other, Kafka consumers create groups and split data among themselves. It also provides books , academic papers, and educational videos to explore the technology in more detail. Kafka vs ETL.

Kafka 93