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Dynamic Code Generation

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vivo Internet Technology
vivo Internet Technology
May 31, 2022 · Databases

Exploring Presto SQL Engine (3) - Implementing WHERE Condition Filtering with Antlr and Dynamic Code Generation

The third article in the Presto SQL Engine series demonstrates how to implement WHERE‑clause filtering with Antlr, contrasting a direct AST‑traversal visitor approach—hampered by branch prediction and JVM inlining issues—with runtime bytecode generation using airlift.bytecode, which yields roughly three‑fold speed gains but adds complexity.

ANTLRAirlift BytecodeBytecode Generation
0 likes · 24 min read
Exploring Presto SQL Engine (3) - Implementing WHERE Condition Filtering with Antlr and Dynamic Code Generation
Big Data Technology Architecture
Big Data Technology Architecture
Jun 28, 2020 · Databases

Understanding OLAP Data Warehouse Types, Architectures, and Performance Optimizations

This article provides a comprehensive overview of OLAP data warehouses, covering classification by data volume and modeling, detailed explanations of MOLAP, ROLAP, HOLAP and HTAP, common open‑source implementations, and a deep dive into performance‑boosting techniques such as MPP architectures, cost‑based optimization, vectorized execution, dynamic code generation, storage compression, runtime filters and resource management.

Big DataCost-Based OptimizationDynamic Code Generation
0 likes · 25 min read
Understanding OLAP Data Warehouse Types, Architectures, and Performance Optimizations