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Aug 26, 2026 · Databases

Tencent's 4 Kernel Optimizations for Trillion-Scale Elasticsearch

Tencent shares four kernel-level Elasticsearch optimizations: memory-based smooth rate limiting to prevent cluster avalanches, Rollup pre-aggregation cutting storage costs 10x, moving FST off-heap to manage 50TB per node, and metadata scalability improvements supporting million shards with sub-5-second index creation.