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Title: feat: Optimize DynamoDB online store for improved latency by ntkathole · Pull Request #5889 · feast-dev/feast · GitHub

Open Graph Title: feat: Optimize DynamoDB online store for improved latency by ntkathole · Pull Request #5889 · feast-dev/feast

X Title: feat: Optimize DynamoDB online store for improved latency by ntkathole · Pull Request #5889 · feast-dev/feast

Description: What this PR does / why we need it: Optimizes the DynamoDB online store implementation to reduce online feature serving latency. O(1) dictionary lookup instead of O(n log n) sorting - _process_batch_get_response now uses dictionary-based lookup for response ordering instead of sorting. Cached TypeDeserializer - Added class-level cached TypeDeserializer instance to avoid per-request object instantiation overhead in async reads. VPC endpoint support for async client - The endpoint_url config is now properly passed to the async aiobotocore client, enabling DynamoDB VPC endpoints for reduced network latency. Improved default configuration values: batch_size: 40 → 100 (max allowed by DynamoDB BatchGetItem) max_pool_connections: 10 → 50 (better concurrency) keepalive_timeout: 12s → 30s (better connection reuse) connect_timeout: 60s → 5s (faster failure detection) read_timeout: 60s → 10s (faster failure detection) total_max_retry_attempts: None → 3 (bounded retries) retry_mode: None → "adaptive" (smart retry with rate limiting) Pre-allocated result lists - Response processing now pre-allocates result lists instead of using append-based growth.

Open Graph Description: What this PR does / why we need it: Optimizes the DynamoDB online store implementation to reduce online feature serving latency. O(1) dictionary lookup instead of O(n log n) sorting - _process_ba...

X Description: What this PR does / why we need it: Optimizes the DynamoDB online store implementation to reduce online feature serving latency. O(1) dictionary lookup instead of O(n log n) sorting - _process_ba...

Opengraph URL: https://github.com/feast-dev/feast/pull/5889

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f1dfe10 feat: Optimize DynamoDB online store for improved latency ntkathole Jan 22, 2026 https://github.com/feast-dev/feast/pull/5889/commits/f1dfe1031606dad817f15f8a4df6ec0da84a73bb
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