DXR 2.0 is about to land! This is a major revision touching every part of the 
system, swapping out SQLite for elasticsearch, and replacing many hard-coded 
C++ assumptions with a language-independent plugin interface.

Please take it for a spin on the staging server at http://dxr.allizom.org/, and 
see if you find any regressions from the production version at dxr.mozilla.org. 
You can file them directly at 
https://bugzilla.mozilla.org/enter_bug.cgi?product=Webtools&component=DXR&status_whiteboard=es
 or just reply. Barring showstoppers, we plan to put it into prod within a few 
weeks.

What's new?

* Improved C/C++ analysis
* Multi-language support—Python and Rust, for starters, soon to be enabled for 
moz-central
* All queries are fast—and will be even faster in prod, once our webheads and 
elasticsearch servers are colocated
* Browsing of images
* Listing of binary files
* Result counts (so jrudermann can have googlefights)
* Independent tree indexing, so one build failure won't scuttle updates for the 
rest of the trees. (This will help us get all the trees currently under MXR 
indexed.)
* Parallel indexing so we can set the DC on fire
* New plugin architecture so we can add new languages, query types, and cross 
references easily 
(https://dxr.readthedocs.org/en/es/development.html#writing-plugins)

This is really a backend-focused release, but you can see some of the new 
possibilities start to leak out. I'm enthusiastic about the features this will 
enable next: better surfacing of symbols without having to know their type 
ahead of time, faceted drill-down, context for search results, and permalinks 
(our last major blocker to decommissioning MXR).

Thanks for helping test it out!

Erik Rose
DXR Lead
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