The Moment the Runtime Became Your Enemy
The article discusses the challenges faced when using a Java-based system for processing large JSON event logs. It details the performance issues encountered due to the JVM's safepoint operations, which led to increased latency. A transition to a Rust-based engine significantly improved performance and reduced latency, demonstrating the importance of runtime control in high-performance applications.
- ▪The initial Java-based system experienced increasing latency due to JVM safepoint operations.
- ▪Attempts to optimize the Java system, including increasing heap size and switching garbage collectors, did not resolve the issues.
- ▪A rewrite in Rust eliminated safepoint stalls and resulted in a dramatic decrease in latency.
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try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3942594) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } pretty ncube Posted on May 30 The Moment the Runtime Became Your Enemy #webdev #programming #rust #performance The Problem We Were Actually Solving Our Treasure Hunt Engine indexes 1.2 TB of JSON event logs from Veltrix operators, then answers sub-second queries like give me all log lines where field error_code = E499 between 2026-05-01T00:00 and 2026-05-07T23:59. Its a classic inverted-index workload.
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