Release Notes NCache 4.4

Wednesday, January 08, 2015

Introduction

NCache 4.4 contains some important enhancements and few major bug fixes related to the stability of the cache. It is a recommended upgrade for all users.

Enhancements and New Additions

Following are some enhancements made in this release:

  1. Annual Licensing:
  2. NCache licensing has been moved to Annual licensing model from previously supported perpetual model.

  3. Memory optimization of internal data structures:
  4. Internal data structures are optimized to reduce the memory overhead of stored items.

  5. Cluster startup time improvements:
  6. Huge improvements in cluster startup time for cluster sizes over 20 nodes.

  7. New perfmon counter for memory usage:
  8. New perfmon counters are introduced to measure the memory acquired by various indexes. Following are the brief descriptions for each of them:

    • Eviction Index Size: Size of eviction indices define on the cache.
    • Expiration Index Size: Size of expiration indices defined on cache. (All dependencies meta info is also covered under this counter like meta info of ‘Key Dependency’, ‘SQL Dependency’ etc…)
    • Group Index Size: Size of group and sub group indices.
    • Query Index Size: Size of query indices defined on cache.
    • NOTE: “Cache Size” counter now includes the size of actual key, value pair and the memory utilized by above mentioned indexes.
  9. OQL related new permfon counters:
  10. OQL related new perfmon counters are also introduced to measure the performance of the query related cache operations like: Average µs/Query Execution: Average time query take while executing. Average Query Size: Average Number of items returned by queries. Queries/sec: Number of queries per sec on cache.

  11. Support for Windows Server 2012 R2:
  12. NCache is now fully compatible with Windows Server 2012 R2.

List of Bugs Fixed:

  • 744101 FIX: Timeouts to some of the connected clients on server node join.
  • 744102 FIX: Item loss in partitioned-replica of two nodes, when one of them goes down while each node has more than 50% of cache filled.
  • 744103 FIX: NCache Manager lists down IPv6 addresses on multiple NIC configuration dialog.
  • 744104 FIX: Few other minor bug fixes in command line tools.

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