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resource savings

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Aug 17, 2026 · Artificial Intelligence

How AI Coding Powered a 150K‑Line Core System Refactor at Qunar

Using AI‑assisted coding, Qunar’s team transformed a 150,000‑line high‑concurrency core system, tackling system‑level uncertainties through a harness‑and‑loop framework, achieving roughly 70% faster delivery, 70% lower latency, 45% resource savings, and a fault‑free launch without QA intervention.

AI codingEngineering MethodologyLarge-Scale Refactoring

0 likes · 23 min read

How AI Coding Powered a 150K‑Line Core System Refactor at Qunar

Zhihu Tech Column

Jun 22, 2026 · Big Data

How Zhihu Boosted Spark Job Performance with Gluten: A Practical Case Study

Zhihu migrated thousands of Spark SQL jobs to the open‑source Gluten/Velox engine, achieving up to 2.7× speedup, 44% CPU savings and 57% memory reduction while fixing numerous consistency, performance, and stability issues through custom optimizer rules and targeted patches.

Data ConsistencyGlutenPerformance Optimization

0 likes · 21 min read

How Zhihu Boosted Spark Job Performance with Gluten: A Practical Case Study

DataFunTalk

Jun 21, 2026 · Big Data

How Zhihu Optimized Spark Jobs with Gluten: A Practical Deep‑Dive

This article details Zhihu's end‑to‑end experience of migrating Spark SQL workloads to the open‑source Gluten framework, covering background performance benchmarks, the architecture of Gluten and Velox, consistency and performance challenges encountered during migration, the concrete fixes applied, and the resulting resource savings and future plans.

GlutenOptimizationSpark

0 likes · 22 min read

How Zhihu Optimized Spark Jobs with Gluten: A Practical Deep‑Dive