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Inside Uber’s Query Architecture: Simplifying Layers and Improving Observability
Uber rebuilt its Apache Pinot query architecture, replacing the Presto-based Neutrino system with a lightweight proxy called Cellar and Pinot’s Multi-Stage Engine Lite Mode. The redesign simplifies SQL execution, improves resource management, and ensures predictable performance for large-scale analytics workloads.
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Basic Concepts and the Future of Axon, a CQRS and Event Sourcing Framework
At the recent Event-Driven Microservices Conference in Amsterdam, Allard Buijze described in a presentation the basic concepts, the history and future of Axon, a framework for systems based on DDD, event sourcing and CQRS. The adoption of Axon Framework is growing rapidly and recently hit one million downloads.
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Optimizing Distributed Queries in Splunk
Optimizing queries in Splunk’s Search Processing Language is similar to optimizing queries in SQL. The two core tenants are the same: Change the physics and reduce the amount of work done. Added to that are two precepts that apply to any distributed query.