Paypal, Inc.

Kenneth Kang

Kamlakar K Singh

Yaping Shi

Somenath Das

Petrica Lulian Voicu

Saibabu Devabhaktuni

Shuping Tien

Varun Sankar Sankar

Samrat Roy

Bin Zhang

Pareshkumar Somabhai Patel

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 are disclosed to provide an animated 2D barcode check that is used to securely and efficiently transmit financial information between mobile devices. The financial information includes a check written by a payer and transmitted to a merchant. The check includes account information of the payer and of the merchant with a payment service provider, a payment amount, and a cryptographic signature that has been certified by the payment service provider. The payer's mobile device encodes the check into a sequence of 2D barcodes and displays the sequence of 2D barcodes in a loop that is scanned by a camera on the merchant's mobile device. The merchant uses the cryptographic signature to verify the validity of the signature on the check without having Internet connectivity to the payment service provider. The merchant may later present the check to the payment service provider to receive payment.

Animated two-dimensional barcode checks

Techniques are disclosed relating to methods that include an authentication management process, executing on a computer system, authorizing a plurality of applications to access a database, and sending one or more passcodes to the authorized applications. In response to an authentication update request, the method further includes selecting a new passcode for accessing the database, and sending, to a plurality of applications authorized to access the database, a notification that the new passcode is available. In response to a request from a particular application, the method also includes sending the new passcode to the particular application. The method further includes determining that each of the plurality of applications has retrieved the new passcode. In response to the determining, the method also includes enabling the new passcode for use by the plurality of applications for accessing the database.

Database application password rotation with reduced downtime

Systems and methods for improving database system performance are described. In one embodiment, a database system includes a database application cluster including at least one read-write node and a plurality of read nodes, a shared memory, and a multiplexer coupled to the database application cluster 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 routed to one of the plurality of read nodes. In response, the database query is routed to one of the read nodes for execution.

Read/write split database query routing

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.

Growing community of inventors

Campbell, CA, United States of America

Kenneth Kang