30+ Updates per Second per Account: Uber Scales Ledger Processing with Batching

Leela Kumili — Thu, 04 Jun 2026 14:02:00 GMT

Uber introduced a high-throughput financial ledger processing system designed to handle hot account write contention at scale. Using 250ms batching, Redis coordination, and optimistic atomic updates, the system supports 30+ updates per second per account while preserving consistency and auditability, reducing multi-hour processing pipelines to minutes in its distributed accounting infrastructure.

By Leela Kumili

Shopify Reports 15X Faster Graphql Execution with Breadth First Engine

Leela Kumili — Mon, 01 Jun 2026 14:25:00 GMT

Shopify introduced GraphQL Cardinal, a new execution engine replacing depth-first traversal with breadth-first execution. The redesign improves large-scale GraphQL performance with up to 15x faster field execution, 6x lower GC overhead, and +4s P50 latency gains. It focuses on execution-layer efficiency and batched resolver processing for high-cardinality commerce queries.

By Leela Kumili

InfoQ - Performance - News

30+ Updates per Second per Account: Uber Scales Ledger Processing with Batching

Shopify Reports 15X Faster Graphql Execution with Breadth First Engine