Saturday, August 28, 2010
This blog is just an abstract of my recent session on SharePoint Overview.
What is SharePoint?
SharePoint is a software platform developed by for collaboration and web publishing combined under a single server. These capabilities include developing web sites, portals, intranets, , search engines, wikis, blogs, and other tools for
Architecture of SharePoint-2007
My understanding is graphically represented in the left side pyramid.
, which uses the Microsoft .NET 2.0 FW, . is used for hosting Web applications of ASP.NET 2.x master pages, content pages, Web parts
(either SQL 2000 SP4 or SQL 2005) is used to store all content i.e. data, file and configuration information.
Storage: Content databases, Management: Administration pages with deep configuration options, Deployment: Web farms, physical servers, and roles, Site Model: Web application, site collection, and sites
Microsoft Office SharePoint Services
Portal: Templates, people, audience targeting, Search: Search center, cross-site search, Content Management: Authoring, publishing, records management, Business Process: Forms server, line of business (LOB) integration, Business Intelligence: , Key Performance Indicator (KPI) lists, Report Center
User profile store, Search services, Usage reporting, Excel services, Notification service for generating alerts
Saturday, August 21, 2010
The chart illustrates the difference in performance between the code, which relies on repeatedly instantiating a Regex object with the same regular expression pattern to call an instance matching method, and the second, which calls a static matching method.
// BAD: Never reinstantiate the same object
Regex rgx = new Regex(pattern);
// GOOD: Take advantage of regex cache
return Regex.IsMatch(input, pattern);
The execution time of the first code is about 15 times the execution time of the second example. The difference in performance is due to the caching of regular expressions used in static method calls. Whereas the first example instantiates a regular expression object and converts the regular expression into opcodes in each of fourteen method calls (one for each element in the string array), the second example performs this conversion only once, on the first method call. Subsequently, it retrieves the interpreted regular expression.from the cache each time the expression is needed.
Only regular expressions used in static method calls are cached; regular expressions used in instance methods are not. The size of the cache is defined by the Regex.CacheSize property. By default, 15 regular expressions are cached, although this value can be modified if necessary. If the number of regular expressions exceeds the cache size, the regular expression engine discards the least recently used regular expression to cache the newest one.
Note that there is a breaking change in regular expression caching between versions 1.1 and subsequent versions of the .NET Framework. In version 1.1, both instance and static regular expressions are cached; in version 2.0 and all subsequent versions, only regular expressions used in static method calls are cached.
Sunday, August 8, 2010
Couple of additional references