Paypal, Inc.

Ebay, Incorporated

Jaykumar Patel

Nikhil Sharma

Alwin Joseph

Rajasudharsan Adhikesavan

Farhang Kassaei

A system performs operations that include receiving a database request to access, via a first connection in a connection pool, information stored in a database of the system. The first connection is associated with a physical connection layer and one or more logical connection layers. The physical connection layer points to a first network socket. Additionally, the operations include storing metadata associated with the one or more logical connection layers in a buffer. The operations further include responsive to determining that the first connection has been terminated and while maintaining the one or more logical layers, modifying the physical connection layer to point to a second network socket that is different from the first network socket. The operations also include subsequent to the modifying, processing the database request via the first connection based on the metadata stored in the buffer.

Managing stale connections in a distributed system

Techniques are disclosed relating to processing database transactions that include application operations defined by different object relational mapping (ORM) libraries. A transaction router module executing on a computer system receives, from an application, a request for a first database transaction, where the first database transaction includes first and second application operations. The transaction router module then translates the first application operation to one or more first database operations using a first ORM library and the second application operation to one or more second database operations using a second ORM library. Then, the transaction router module determines one or more database connections for the one or more first database operations and the one or more second database operations. Such techniques may advantageously allow applications to switch between using different persistence frameworks and message broker frameworks without substantial adjustments to application code.

Processing techniques for database transaction requests with operations defined by different ORM libraries

A method includes calculating first connection usage information based on a first number of connections being used in a connection pool over a first time interval and adding a first number of database connections to the connection pool based on determining that the first connection usage information satisfies a first usage threshold. Additionally, the method includes calculating second connection usage information based on a second number of connections being used in the connection pool over a second interval. The second interval has been previously reset responsive to adding the first number of database connections to the connection pool. The method also includes determining whether to adjust the number of database connections in the connection pool based on the second connection usage information.

Self-adjusting connection pool in a distributed system

A method and a system to manage recommendations in an online marketplace are presented. A social shopping interface is provided at a publisher site accessed by a first user identified by a first user identifier. A recommendation of a listing describing an item for sale and including a second user identifier corresponding to a second user is accessed from a recommendation database. The recommendation, including at least a portion of the listing and the second user identifier are displayed to the first user at the publisher site via the social shopping interface.

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San Jose, CA, United States of America

Jaykumar Patel