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HelloTech
HelloTech
Jun 21, 2022 · Backend Development

Recommendation Engine Upgrade Path, Architecture, and Performance Optimization for the "Guangguang" Content Community

The article details Guangguang’s shift from a rule‑based, Hive‑driven recommendation pipeline to an algorithmic service that leverages Elasticsearch and Redis for multi‑source recall, coarse and fine model ranking, exposure filtering, cold‑start handling, latency optimizations, reliability monitoring, and future vector‑based enhancements.

Cold StartElasticsearchRedis
0 likes · 16 min read
Recommendation Engine Upgrade Path, Architecture, and Performance Optimization for the "Guangguang" Content Community
Didi Tech
Didi Tech
May 19, 2021 · Artificial Intelligence

Applying Epsilon‑Greedy Bandit Algorithm for Content Delivery Optimization at DiDi

DiDi applied the epsilon‑greedy bandit algorithm integrated with its CMS to optimize ad placement across 600 slots, using quality scores, traffic sampling, and a drag‑and‑drop UI, which boosted CTR from 1.35% to 13.43% and unique visitors by 686%, demonstrating data‑driven growth beyond simple A/B testing.

Didibandit algorithmcontent optimization
0 likes · 10 min read
Applying Epsilon‑Greedy Bandit Algorithm for Content Delivery Optimization at DiDi