Alachisoft in TechEd America and TechEd Europe

June 7, 2012

Alachisoft has announced its participation in TechEd America and TechEd Europe to be held in Orland from June 11-14,2012 and June 22-25, 2012 in Amsterdam respectively, according to the Alachisoft Newsletter. Alachisoft will showcase two of its premier products there, NCache and StorageEdge.

Iqbal Khan, The Technology Evangelist at Alachisoft, will demonstrate to the visitors how NCache reduces expensive database trips resulting in enhanced performance and extended scalability, especially since these qualities are now considered core requirements for a reliable and efficient enterprise application.

While StorageEdge promises to strengthen your SharePoint ROI by assisting in offloading BLOBs onto cheaper storage tiers with various filtering options to help improve user experience and bandwidth. Though I’ve discussed the benefits and features of StorageEdge in detail in my earlier post, below are some of the highlights,

    – RBS Filestream provider
    – BLOB Externalization
    – Archiving to multi-Tire Storage
    – Rational Archiving for Compliance
    – File Share linker
    – Database Mirroring
    – Asynchronous BLOB Writing

Visitors will witness these remarkable features and noticed the strength of StorageEdge and NCache via live demos and presentations at the booth, apart from the brochures.

The event, hosted by Microsoft, is the leading event for business and IT professionals from all over the world. TechEd is offering most comprehensive education across Microsoft current and soon-to –be –released suites of products, solutions, tools and services. This will be the 20th Annual TechEd North America this June in Orlando and it will deliver four days of hand –on training from Microsoft experts.

Alachisoft also participated in the Last year’s TechEd which was held in Atlanta, North America. “This helped us build confidence in our customers who see us there every year and projected our growing influence and strategic place among up and coming companies. Thank you to all who were part of it and made it a success” said by CTO Iqbal Khan at the end of the last year’s event.

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Secondary (L2) Cache with NHibernate – Taking Performance to the Next Level

April 11, 2011

The fast, reliable and mature O/R mapping features that NHibernate comes with provides a remarkable reduction in the overall development cycle. However, as the application grows in complexity and the data on which they thrive upon becomes complex, the generality of such OR mapping engines may lead to various performance and scalability bottleneck. Applications cannot scale linearly with the increasing transactional requirements. Caching is one approach that provides just the right solution to address such issues. Infect the fact that caching does provide a remarkable performance boost to applications performance is recognized by the makers of NHibernate. NHibernate provides some caching infrastructure. By default it provides a standalone InProc (in process) first-level (L1) cache, or session-level cache. However in addition, , NHibernate also supports a second-level cache to be plugged in to exploit the benefits of a sophisticated enterprise-grade caching infrastructure.

Why is Secondary (L2) Cache Required with NHibernate

NHibernate provides a basic, not-so-sophisticated in-process L1 cache out of box. However, it doesn’t provide features that a caching solution must have to have a notable impact on the application performance. Some of the areas which NHibernate lacks in are:
1.Cannot handle ASP.NET worker process recycling: Worker process recycling destroys and recreates the entire cache which has a negative performance impact on your app.
2.Cannot handle ASP.NET web gardens:ASP.NET app runs in multiple worker processes in a web garden configuration. This creates multiple in-process copies of the cache that are not synchronized with each other and lead to data integrity errors.
3.Cannot handle ASP.NET web farms: ASP.NET apps frequently run in web farms for scalability reasons. A stand-alone cache is unaware of multiple servers and cache instances and is not synchronized. This leads to data integrity problems.
4. Cannot handle application scalability:If your application (ASP.NET, .NET web service, distributed app, grid computing app, or an N-tier app) needs to scale up and run on multiple servers, your cache must be distributed. Otherwise, it would lead to data integrity problems.
5.Cannot handle large cache size: In-process cache means it cannot grow more than what your app process can handle. A distributed cache on the other hand can grow in size through distribution.

Thus it surly requires a secondary level caching infrastructure which can not only address the above mentioned problems but also boost its performance.

NCache – Pluggable Cache for NHibernate

NCache provides just the right solution to problems highlighted above. It is extremely fast, enterprise-grade and highly scalable level-2 distributed cache for NHibernate. It is an in-memory object cache for .NET that lets you improve NHibernate performance and scalability without any code change. Some of the immediate benefits are:

• Scale up with Mirrored, Replicated, Partitioned, and Client Cache topologies
• Software appliance for NHibernate (no code change required)
• Database synchronization of cache thru SqlDependency

NCache acts as a 2nd Level distributed cache that lets you improve your application performance and also scales out very nicely when your application needs to scale out. Below are some of the benefits of using clustered sessions:
1.Handles ASP.NET worker processes well: NCache can be used out-of-process. This means multiple ASP.NET worker processes can share a common out-of-process cache. This also addresses worker process recycling problem because the cache is not affected by it.
2.Handles ASP.NET web farms: NCache creates a clustered cache that can live on multiple servers. This allows your ASP.NET apps and .NET web services to run in web farm configuration without worrying about cache synchronization issues.
3. Highly scalable: You have a rich set of clustering topologies (replicated, partitioned, and client nodes) that allows you to scale up to 100’s of web servers in your farm without compromising on performance.
4.No single point of failure (high availability): Clustering the cache allows you to eliminate all single points of failures from your environment. This makes your application highly available.
5.100% Native .NET: NCache is a 100% native .NET product. This means that you can expect us to stay on top of all additions and changes to .NET as compared to a non-.NET solution.


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