Jane Street cuts Aria message bus CPU use by 30%
What happened
On October 9, Hacker News covered optimization work on Aria, Jane Street's internal messaging framework. Intern Theodor Totev added an index structure partitioned by topic partition, paired with a min-heap for n-way merge to filter messages. The report sums the work up as optimizing the message bus through indexing and tree splitting, and gives the production-load result: CPU usage down 30%. What is disclosed so far covers the index structure change, the message filtering method and the CPU improvement in production.
Written by AI from the coverage · updated 2 hours ago
Coverage
Follow the reports to see the story from different sides.
- Hacker News front pageScaling and benchmarking a critical message bus using a new indexing strategy
Jane Street 实习生 Theodor Totev 为内部消息框架 Aria 引入按 topic partition 划分的索引结构，配合 min-heap 做 n 路归并过滤消息，生产负载下 CPU 使用率下降 30%。
Heat over time
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