• Overview
  • MySQL Solutions
  • NoSQL Solutions
  • Caching Solutions
    • Enjoy memcapable memcached
    • Cost-Effectively Scale Your Caching Tier
    • Reduce TCO through Dramatic Server Consolidation
    • Ensure Availability with Replication and Failover
  • General

Ensure Availability with Replication and Failover

Web sites increasingly rely on memcached-based caching or NoSQL key-value stores to deliver superior application performance. Failures in the cache or key-value store can lead to large, unexpected loads on the database that significantly degrade the end-user experience. Schooner's Memcached/NoSQL Appliance includes enterprise-grade high-availability/disaster-recovery (HA/DR) features. These deliver comprehensive service and data availability, protecting you against the full range of possible failures including outages, data loss or corruption, unexpected surges in traffic, administrative errors, and scheduled maintenance.

• Schooner Persistent Caching: This ensures that all cached data is immediately available even after a power outage, unlike with traditional memcached where cached data is lost on an outage. We eliminate performance-degrading, multi-hour or multi-day cache warm-up periods.
• Schooner Replication & Automated Failover: You can configure your Schooner Appliances such that if one needs to be taken offline for maintenance or fails for any reason, there is another node that will transparently take over and serve the clients of the node that is offline. Schooner offers Active/Active replication which fully utilizes all nodes and Synchronous Replication that ensures no data is lost on failover. No manual intervention or additional application overhead is required.
• Schooner Backup & Restore: Full and incremental backups can be performed to the onboard HDDs. Performing scheduled backups enables the cache data to be restored to a previous state in the event of application-driven data corruption, user error, or other data loss.
• RAID: RAID on the SSDs protects against downtime from SSD failures and planned SSD maintenance. The SSDs can be hot-swapped for maintenance. RAID5 minimizes the capacity overhead required for redundancy.
• Rolling Upgrade: Our Appliance software is upgraded to a newer version without a disruption to service.

These features require no application or client changes, are 100% compatible with the standard Memcached protocol, and are a breeze to deploy. So it's easy to immediately begin taking advantage of their benefits.

Schooner's HA/DR capabilities let IT groups spend less time fire-fighting and more time planning and optimizing the datacenter.

• Fully automated failovers eliminate the need for manual intervention;
• Hot-swappable SSDs enable maintenance without impacting service;
• Backup & Restore enable IT groups to quickly bring a system back to optimal performance after catastrophic data corruption or loss.
• In addition the ease-of-use of the HA/DR features, through centralized management tools, makes the Schooner HA solution a breeze to deploy and manage.

Schooner's HA/DR capabilities are completely transparent to applications and impose no additional overhead. Application development is greatly simplified by eliminating the need for applications to be defensibly programmed to have their own high-availability mechanisms. Developers can focus their efforts on the core business functionally and leave HA/DR to the Schooner Appliance.

"In the wonderful world of Schooner, failovers go away. Schooner replication means that you're sure that what you have on one node will also be on the other." Ethan Erchinger, Director of Operations at Plaxo.

It's said that in business, only the paranoid survive. Schooner's HA solution lets you rest easy, without the paranoia.