I’ve been using Lucene for the past six or seven years, and after my last post, I thought it would be a good idea to talk a bit about the kind of things that it isn’t doing well. We’ve been using it extensively in RavenDB for the past 5 years, and I think that I have a pretty good understanding of it. We used to have one of Lucene.NET committers working at Hibernating Rhinos, so I’ve a high level of confidence that I’m not just stupidly not using it properly, too. Probably the part that caused us the most pain
with Lucene was the fact that it isn’t transactional. That is, it is quite easy to get into situations where the indexes are corrupted. That make it… challenging to use it in a database that needs to ensure consistency. The problem is that it is really not a use case that Lucene is well suited for. In order to ensure that data is saved, we have to commit often, the problem is that in order to ensure good performance, we want to commit less often, but then we will the changes if we crash. For that matter, Lucene doesn’t do...(Read whole news on source site)
Originally posted on: http://geekswithblogs.net/TATWORTH/archive/2014/04/14/apress-deal-of-the-day---14apr2014---pro-asp.net.aspx Today's $10 deal of the day from APress at http://www.apress.com/9781430242543 is Pro ASP.NET 4.5 in C#. One of the authors is Adam Freeman who is excellent at providing practical code examples. "ASP.NET 4.5 is the principal standard for creating dynamic web pages on the Windows platform. Pro ASP.NET 4.5 in C# raises the bar for high-quality, practical advice on learning and deploying Microsoft's dynamic web solution."
One change you will notice when you install MVVM Light V4.3.31 is that I marked the DialogMessage class as Obsolete. The DialogMessage class is one of the built in message classes in the MVVM Light Messaging namespace. When sent by the Messenger to a view element (Window, Page, etc), it carries information that can be […]
Software A new search experience on the Gallery - Andrew Stanton-Nurse and the NuGet Team discuss their recently deployed improvements to the search experience witih the NuGet Gallery Information Open Source is a thankless job. We do it anyway - Scott Hanselman discusses the many difficulties of the open source community and the types of problems that are [...]
Database plays an irreplaceable role in the modern economy and is widely used in the business computing areas like Enterprise Resources Planning (ERP), Customer Relation Management (CRM), Supply Chain Management (SCM), and the Decision Support System (DSS).
Computation of structured data in the database mainly relies on SQL (Structured Query Language). SQL is the powerful, simple-to-use, and widely-applied database computing script. However, it has some native drawbacks: non-stepwise computation, incomplete set-lization, and no object reference available. Although almost all vendors have
introduced and launched some non-compatible solution, such as various stored procedure like PL-SQL, T-SQL. These improved alternatives cannot remedy the native SQL drawbacks.
esProc solves these drawbacks with more powerful computational capability, much lower technical requirement, and broader scope of application. It is a more convenient database computing scripts.
A multinational retail enterprise needs to collect statistics on the newly opened retail store, including: How many new retail stores will open in this year? Of which how many companies...(Read whole news on source site)