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Web Sessions

Simple scale for Web applications.

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Simple scale for Web applications.

  • Assure high availability for sessions at any scale
  • Watch performance gains in real-time
  • Improve the customer experience

Terracotta Web Sessions is the fast, reliable way to get the scalability benefits of a stateless Web architecture without overloading your database or rewriting your application. Supporting the Java® Servlet session standard, Terracotta Web Sessions works with your favorite Web framework, your favorite application container and custom session objects.

Used for: Optimizing departmental applications as well as large-scale Web and e-commerce sites

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Sessions visibility

  • See the performance of your entire application cluster at a glance
  • Browse the live contents of user sessions for easy debugging and problem resolution

Easy scalability

  • Add servers to your application tier easily
  • Assure high availability for sessions at any scale
  • Increase application throughput without downtime or disrupting the customer experience

Session consistency

  • Session data guaranteed to be coherent, consistent and up-to-date
  • Ensures a consistent customer experience even routed to different application servers in the event of server failure or restarts

Broad container support

  • Terracotta Web Sessions works with most major application servers and a wide range of popular Web frameworks

In-memory speed

  • Dynamically partitions and optimizes the locality of user session data to provide coherent and reliable access to hot sessions at in-memory speed
  • Yields very high application throughput and very low session access latency, no matter how many application servers and concurrent users

High performance, high availability

  • Enjoy 99.999 percent uptime for your session data without sacrificing application performance or punishing your database
  • Ensure session data is always available, even in the event of server failure or restart by taking advantage of BigMemory’s fault tolerance and Fast Restartable Store


  • Terracotta keeps only the locally active session data in memory and sends only the changed data over the network when sessions are updated
  • Efficient use of memory and network resources enables Terracotta Web Sessions to outperform competitive solutions
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