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Posted to issues@trafficserver.apache.org by GitBox <gi...@apache.org> on 2021/04/14 22:22:08 UTC

[GitHub] [trafficserver] jrushford commented on issue #7669: Issue with memory mapped GeoIP DB files in Linux?

jrushford commented on issue #7669:
URL: https://github.com/apache/trafficserver/issues/7669#issuecomment-819885995


   Before the database is opened with MMDB_open(), why not first copy the database file  as possibly a hidden file and then MMDB_open() and get a file handle to the copy.  Any changes to the configured database file would not affect ATS but, the plugin could notice the change to the configured filename and make another copy, use MMDB_open() to get a 2nd file handle to the new copy.  When it is determined safe to do so, swap the the active file handle with the new file handle and MMDB_close the old file handle.  Maybe using a smart pointer to the active file handle or a mutex in order to swap file handles.


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