Imagine a system that has to process a lot of information very very fast. Also, when the information has the same target (person, device… whatever) and the same action type for that target it has to be done sequentially, one action has to be blocked by the other. With these requirements I have implemented the […]

Hi all! Migrating eattopia from google maps v2 to v3 in GWT we have had lots of problems. First is all those api changes. And… although v3 is much more complete it lacks some basic methods in V2. Our main headache has been converting from lat/lon to a point (pixel), just to know where to […]

Hello, Sometimes we get the following exception: An error processing the current work item has caused the workflow to abort. See the inner exception for details. InnerException Message: The execution of the InstancePersistenceCommand named {urn:schemas-microsoft-com:System.Activities.Persistence/command}SaveWorkflow was interrupted by an error. We have to write this section in the web.config in order to write the whole […]

Hello, Sometimes we have contention problems in database because of the transaction isolation level when we execute a lot of inserts in parallel. To avoid this, if the business allows it, it is useful to “downgrade” the isolation level of .NET transactions. By default, in the .NET framework, it is set to Serializable, but usually […]

There is a little lie about the serializable transaction isolation level. In many places you can read that serialization level gives you the illusion of executing the transactions one behind the other, one at a time. Nothing further from the truth. http://msdn.microsoft.com/en-en/library/tcbchxcb(v=vs.80).aspx In that link we can read: SERIALIZABLE is the most restrictive isolation level, […]

Copyright: Marta Aldea, yo sólo soy un humilde escriba en este asunto. Ingredientes: Aceite de oliva. Una cabeza de ajo. Mantequilla o margarina. Una pastilla de caldo de carne. Brandy, whisky o vino para cocinar. Un limón. Se pone aceite, que cubra bien el fondo de la sartén o cazo, a calentar a fuego medio. […]

Well, things change, improve and makes your life more difficult. Now we have a deadline from FB in October first, all the people should use OAuth authentication, in other words: the FB security changes. The FB documentation is accurate, but with examples in PHP. The main changes are: now the cookie is encrypted, the content […]