Paypal, Inc.

Shuping Tien

Kenneth Kang

Kamlakar K Singh

Yaping Shi

Petrica Lulian Voicu

Somenath Das

Saibabu Devabhaktuni

Bin Zhang

Pareshkumar Somabhai Patel

Samrat Roy

A source database and a target database are accessed. The source database contains data to be migrated over to the target database. The read operations from the target database and the write operations to the target database are ceased, while the read operations from the source database and the write operations to the source database are maintained. The data from the source database is replicated to the target database. During the replication, the read operations from the source database are maintained but the write operations to the source database are ceased, while the read operations from the target database and the write operations to the target database are also ceased. After the replication has been completed, the read operations from the source database and the write operations to the source database are ceased. The read operations from the target database and the write operations to the target database are resumed.

Reducing electronic service disruptions during database migration

Systems and methods for improving database system performance are described. In one embodiment, a database system includes a master database, a replica database, a shared memory, and a multiplexer coupled to the master database, replica database, and shared memory. The multiplexer is configured to receive a request from a client computing system which includes a database query. Based on a lookup in the shared memory, the multiplexer determines that the database query can be satisfied by the replica database. In response, the database query is routed to the replica database for execution.

Replica database query routing for database environments

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San Jose, CA, United States of America

Shuping Tien