-Temporary Tables Improvements -Persistent global variables -No more MyISAM System Tables -Reclaim UNDO space from large transactions -UTF8 performance -Removing Query Cache -Atomic DDLs -Faster & More Complete Performance Schema (Histograms, Indexes, …) and Information Schema -ROLES -REDO & UNDO logs encrypted if tablespace is encrypted
http://lefred.be/content/top-10-mysql-8-0-features-for-dbas-ops/
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