[Halld-offline] New sub-minor release: CCDB 1.06.07

[Mark Ito]

People,

This release, CCDB 1.06.07 
<https://github.com/JeffersonLab/ccdb/releases/tag/v1.06.07>, makes a 
small change in the main query that retrieves constants from the CCDB 
for use by client programs. A change had crept in whereby the database 
indices, created in advance to speed up retrieval of constants and in 
existence for a long time, had been ignored. This change makes no 
difference in the constants retrieved, rather it increases the rate of 
retrieval of those same constants to where they should be. The 
improvement has not been measured carefully but it is somewhere in the 
range of a factor of 4 to 10 for the database-server part of  constant 
retrieval, the part that has been giving us trouble recently.

This release of CCDB is used in the recently-released default version 
set, version_4.16.0.xml 
<https://mailman.jlab.org/pipermail/halld-offline/2020-March/003938.html>. 
If there is demand, it could be back-ported to previous version sets 
rather easily. Let me know.

Recall CCDB 2.0 is going to be here any minute...

   -- Mark

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