Purdue University

Tsinghua University

Software Engingeer at Google

Google

Staff Software Engineer

Wish

Architect, Software Engineer

Scale Google Logging Infrastructure
- Query engine improvement for latency and performance (integration of new columnar file format, stateful caching, partition/files pruning)
- Logs Placement
Technologies: Clustering, Mixed Integer Programming
- Logs Front Door
Specify and enforce business logic, GDPR and fault tolerance rules.
Technologies: Spanner, Flume, Stubby, Load Balancer, Global Throttler, OnePlatform
- Logs Analysis Locality Aware
Storing location and information of logs data, Logs Analysis locality-aware.
Technologies: Pub/Sub, Spanner, M/R, Stubby, Load Balancer, Colossus, Borg

TL of Social Graph (Flock)
Addressed long-standing scalability and stability issue of the service.
Improved performance and stability of Messaging platform.
Technologies: Finagle, Thrift, MySQL, In-House K/V store (Think of Cassandra w/ Raft), Memcache, BookKeeper

Twitter

Worked on Bing Cosmos infrastructure, particularly distributed KV store w/ schema and transaction
• Tech Lead of Distributed Transactional Key-Value Store, on top of In-house Cosmos File system (Think of HBase with Cross partition Transaction and schema).
• Designed transaction management (snapshot isolation)
• Implemented LSM, Compaction, Split/Merge

Microsoft Corporation

Principal Software Design Engineer

• Worked on SQL Azure (Metadata Mgr for transparent scale out, sharding framework)
• Member of SQL Server System Design Group (Architecture and Design Review)
• Worked in various stacks including Metadata/DDL, Security, Programmability.
• Worked on Database features, including Sequence, SQL Highly Available replication.
• Redesigned Online Index Build execution context protocol in SQL 2005 that effectively addressed various data corruption issue during stress run, which plagued the division during the release cycle.

Yixue Zhu