time travel | BestHub

Tencent Cloud Developer

Aug 23, 2023 · Big Data

WeChat Experiment Platform: Architecture Design and Iceberg Lakehouse Optimization

The WeChat Experiment Platform migrated its 60,000 metric, 200,000 core, 30 PB plus data pipeline to an Iceberg based lakehouse, leveraging three layer metadata, fine grained partitioning, MERGE into writes, time travel snapshots and skew handling UDFs, which cut core time by 69%, saved ~100 PB storage, and reduced latency by up to 70%.

LakehouseMerge IntoMetric Computation

0 likes · 18 min read

WeChat Experiment Platform: Architecture Design and Iceberg Lakehouse Optimization

Baidu App Technology

Nov 15, 2021 · Frontend Development

State Management in San: san-store Implementation and Time‑Travel Debugging

The article explains front‑end state management using San’s san‑store, detailing its Flux‑style architecture, action registration, component connection, immutable updates with san‑update, and a time‑travel debugging system that logs state changes, restores snapshots, computes efficient diffs, and discusses its benefits and limitations.

FluxFrontendSAN

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State Management in San: san-store Implementation and Time‑Travel Debugging

vivo Internet Technology

Aug 25, 2021 · Backend Development

Design and Implementation of a Time‑Travel Module for E‑commerce Promotion Validation

The team built a whitelist‑based time‑travel module that overrides the system clock for selected operators, letting them preview future promotional prices in Vivo’s e‑commerce flow without creating real orders, by propagating an openId context through Dubbo filters and replacing System.currentTimeMillis() with a custom TimeTravelUtil.

BackendDubboJava

0 likes · 12 min read

Design and Implementation of a Time‑Travel Module for E‑commerce Promotion Validation