Project leader and architect. His background includes object relational database engine (UniSQL) and PostgreSQL development. He designed basic architecture of GTM and GTM-proxy. He is also the developer of XCM (XC cluster manager), GTM-Standby and other HA feature.
He is contributing to various code including new distribution function, merge with PostgreSQL 9.0.3 source code, etc.
Global Transaction Manager developer. He is well known as HOT developer in PostgreSQL. He is also helping in source code review and PostgreSQL internals.
Coordinator feature developer. He has developed a couple of GTM features, pooler extension and DDL synchronization. He helped in modifying DBT-1 benchmark for Postgres-XC. He also contributed to enhance pgbench in PostgreSQL 9.0.
Test, performance evaluation and analysis, related documents and utilities.
Binary buiding for releases. He is also developping binary packages of PostgreSQL.
As a Coordinator developer, he has worked on planner and locator extensions. He is also the main architect of GridSQL database cluster.
He has worked on Data Node, connection pooling and cursor support He is also GridSQL developer and is now developping aggregate functions and other cross-node operation.