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NCache vs. Memcached

This comparison is between NCache 4.1 SP2 and Memcached v1.4.15. It describes major feature differences between both products. For a detailed comparison, please read the PDF.

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Feature Area

Memcached

NCache

Performance & Scalability

Optimizations require programming. Only Bulk Get provided. No help with serialization optimization. And, Async operations not provided. Optimizations provided as options. All Bulk operations provided. Custom compact serialization provided. Async operations provided. And much more.

Cache Elasticity
(High Availability)

No support for it.

This is weakest area for Memcached. Everything is static and if one server goes down, the entire cache is down.
Highly elastic with 100% uptime. Peer to peer cache cluster architecture. Connection failover support and dynamic configuration.

Cache Topologies

No replication provided.

Only Partitioned (static). Cannot add or remove partitions at runtime. Cannot add/remove app servers at runtime.
Rich options. Mirrored, Replicated, Partitioned, Partition-Replica, and Client Caches. Highly dynamic. And intelligent replication provided.

WAN Replication

No support for it. Supports WAN replication between following sites. Active-passive, active-active, one-active & multiple passive, and 3 or more active sites. No performance drop.

Cache Administration

Limited third-party GUI tools with basic features. Monitoring is also very simple. No PerfMon counters provided for Windows. And, basic command line tools. Very feature-rich GUI tools. NCache Manager, NCache Monitor, PerfMon counters, and command line tools provided.

Security & Encryption

No support for it. Active Directory/LDAP authentication, authorization, and 3DES/256AES encryption. No programming needed.

Object Caching Features

Very basic operations like Get, Add, Update, Remove, Exists, & Clear Cache. No sliding expirations provided. No lock/unlock or item versioning, and no streaming API. Very rich operations. Get, Add, Update, Remove, Exists, & Clear Cache with many options. Both absolute & sliding expirations. Lock/unlock, item versioning, and streaming API provided.

Managing Data Relationships

No support for it. Key based Cache Dependency allows you to handle one-to-one, one-to-many, and many-to-many relationships in the cache automatically.

Synchronization with
Data Sources

No support for it. SqlDependency, OracleDependency, DbDependency, & CLR Stored Procedures for database synchronization. File based and Custom dependency for non-relational data sources.

Runtime Data Sharing

No support for it. Events, Continuous Query, .NET/Java portable binary data, and more. Use NCache for publisher/consumer data sharing between .NET/.NET or .NET/Java apps.

Search Cache (SQL-Like)

No support for it. Object Query Language (OQL) and LINQ. Search cache on object attributes, Tags, and Named Tags with SQL-like query.

Data Grouping

No support for it. Group/sub-group, Tags, and Named Tags. Group, fetch, update, and manipulate data intelligently.

Read-thru & Write-thru

No support for it. Multiple Read-thru, Write-thru, Write-behind. Use cache to fetch data from your database and simplify your apps. Also auto-reload cached items when expired or when database synchronization needed.

Cache Size Mgmt

Yes (but at slab level)
LRU evictions
Yes (and at cache level)
LRU, LFU, and Priority evictions.
You can designate cached items to not be evicted with priority eviction.

ASP.NET Support

ASP.NET Session State
(no session replication)
ASP.NET View State
(no replication or session association)
ASP.NET Session State, ASP.NET View State, ASP.NET Output Cache.
Replication for sessions, view state, and page output. Link view state with sessions for auto expiry and much more.

Third Party Integrations

NHibernate Second Level Cache
(no replication)
NHibernate Second Level Cache,
Entity Framework Cache,
EntLib Caching Block.
Extra features provided for all of these. Use all of these without any programming.

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