87c2e53b5a
At present, the insert of new attributes in JdbcOperationsSessionRepository is done unconditionally. This can cause data integrity violation errors with concurrent requests, where one request attempts to add new session attribute while the other, concurrent request, deletes the session. This commit addresses the described scenario by executing insert of new attributes conditionally on presence of parent record. Closes gh-1031
= Spring Session image:https://travis-ci.org/spring-projects/spring-session.svg?branch=master["Build Status", link="https://travis-ci.org/spring-projects/spring-session"] image:https://badges.gitter.im/spring-projects/spring-session.svg[link="https://gitter.im/spring-projects/spring-session?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge"] Spring Session provides an API and implementations for managing a user's session information, while also making it trivial to support clustered sessions without being tied to an application container specific solution. It also provides transparent integration with: * `HttpSession` - allows replacing the `HttpSession` in an application container (i.e. Tomcat) neutral way, with support for providing session IDs in headers to work with RESTful APIs. * `WebSocket` - provides the ability to keep the `HttpSession` alive when receiving WebSocket messages * `WebSession` - allows replacing the Spring WebFlux's `WebSession` in an application container neutral way. == Modules Spring Session consists of the following modules: * Spring Session Core - provides core Spring Session functionalities and APIs * Spring Session Data Redis - provides `SessionRepository` and `ReactiveSessionRepository` implementation backed by Redis and configuration support * Spring Session JDBC - provides `SessionRepository` implementation backed by a relational database and configuration support * Spring Session Hazelcast - provides `SessionRepository` implementation backed by Hazelcast and configuration support == Code of Conduct This project adheres to the Contributor Covenant link:CODE_OF_CONDUCT.adoc[code of conduct]. By participating, you are expected to uphold this code. Please report unacceptable behavior to spring-code-of-conduct@pivotal.io. == Spring Session Project Site You can find the documentation, issue management, support, samples, and guides for using Spring Session at http://projects.spring.io/spring-session/ == License Spring Session is Open Source software released under the http://www.apache.org/licenses/LICENSE-2.0.html[Apache 2.0 license].