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Regarding the RavenDB Entity Framework Profiler

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Regarding the RavenDB Entity Framework Profiler

· Database Zone ·
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One of the things that I really love about build things like the profilers and RavenDB is that it gives me the chance to really spread a lot of my experience in codified form. Occasionally, we get customer feedback to that effect, and I thought that I would share this one with you.

Jeremy Holt have been using the Entity Framework Profiler and has the following to say:

The biggest issue it has highlighted for me is the question of the Context being created on different threads (the N+1 was easy to get my head around and resolve). The problem is the difficulty in finding definitive examples of how/when the Context should be created. (Also found my unbound queries – thanks for that!!)

It was working great (except for a couple of threading issues J) until I ran EFProf. I love the “page of shame” in EFProf – I think you called it “query analysis alerts” or something pompous like that – may I suggest you rename it to “errors dumb programmers make” J

I don’t think that this will be renamed, but this does point out something very important. What we are doing with the profilers is much more than simply show you what your application is doing. We are actually analyzing this data through a complex set of rules in order to find common pitfalls. In Jeremy’s case, the common ones were cross thread usage and Select N+1.

And by highlighting those issues, the profiler make it easy to do so. More so, it make you feel good about doing this, in a way that you wouldn’t get from standard analytics tools.

By having thresholds that you can visibly see and avoid, you get to create better software.


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