Shay Hassidim

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So far Shay Hassidim has created 40 blog entries.

Moving into Production Checklist

By |2009-12-26T15:11:55+00:00December 26, 2009|

You are about to complete your existing project , all the functionality is in place , all unit tests are passing , profiling done and there are no visible bottlenecks , benchmarks been executed and the system seems to scale and perform nicely: You (think you) are ready to move [...]

Space Object Graph

By |2009-10-12T09:29:28+00:00October 12, 2009|

Many times I'm being asked how to design the Space object data model to manage complex object graph in an optimal manner while stored within the In-Memory-Data-Grid. Here are few recommendations that I've seen implemented in the field: Large Collection Handling When your application constructs a collection of objects that [...]

The Master-Worker Pattern

By |2009-08-24T08:10:43+00:00August 24, 2009|

The Master-Worker Pattern (sometimes called Master-Slave pattern) is used for parallel processing. It follows a simple approach that allows applications to perform simultaneous processing across multiple machines or processes via a Master and multiple Workers. In GigaSpaces XAP, you can implement the Master-Worker pattern using several methods: - Task Executors [...]

Global World Wide Elastic IMDG on the Cloud

By |2009-08-08T00:22:18+00:00August 8, 2009|

My friend Gary Berger , Cisco Customer Solutions Architect , posted a blog about GigaSpaces powered Service Virtualization. This post describes his experience deploying GigaSpaces In-Memory-Data-Grid and his Grails application ported to GigaSpaces across several nodes located in several remote geographical sites. Each site had both an IMDG node and [...]

Rapid Data Load

By |2009-07-31T18:54:50+00:00July 31, 2009|

I've been involved recently with a POC where we had to load large amount of data into the Data Grid and later perform some complex queries. I took the flight from NY to LA to present the POC and had really only few hours on the plane to build the [...]

JavaOne 2009 Lab – PetClinic in the Clouds

By |2009-05-22T09:26:01+00:00May 22, 2009|

This year JavaOne will include really cool lab - PetClinic in the Clouds: Scaling a Classic Enterprise Application. In this Hands-on Lab, participants will take a popular Web application (the Spring PetClinic sample application) and modify it so that it can be deployed on the Amazon EC2 cloud computing infrastructure. [...]

Benchmarking on the Cloud – Your Definitive Check List!

By |2009-05-13T12:03:18+00:00May 13, 2009|

Introduction Evaluating a new software product usually involves running benchmark tests many times, to assess the different capabilities of the product using some measurable elements. Generally, the end result of such tests is a matrix that includes the product latency, throughput or scalability values. Such a matrix compares the product [...]

Persistence on the Cloud – How and Why?

By |2009-04-02T23:55:27+00:00April 2, 2009|

I was reading Todd's post on the highscalability site and Nati's post about Scaling out - MySQL. These posts outline the difference between GigaSpaces approach and database clustering approach. When reading these I have noticed that users might be missing some information about how they can persist their Data while [...]

Ultra-Scalable and Blazing-Fast: The Sun Fire x4450-Intel 7460-GigaSpaces XAP Platform – 1.8 million operations/sec!

By |2009-02-09T18:55:04+00:00February 9, 2009|

Introduction Over the past several years highly concurrent applications have faced some serious challenges when trying to scale on multi core machines. GigaSpaces scale-out-application server aims to solve this problem by freeing the user from dealing with the need to handle concurrency while building his distributed application. For the last [...]

Daniel Gradecak's Blog-Are JavaSpaces recognized?

By |2009-01-04T11:16:39+00:00January 4, 2009|

I’ve been reading this nice post from Daniel Gradecak's blogs. He is asking interesting questions about how architects building their systems and how JavaSpaces and SBA are used when designing distributed systems. See my comment as a feedback to his questions. Thank you Daniel for this post! Shay