Summary:
A new blog post to introduce recent development related to online validation.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/8338
Test Plan: Local test with "bundle exec jekyll serve"
Reviewed By: ltamasi
Differential Revision: D28757134
fbshipit-source-id: 42268e1af8dc0c6a42ae62ea61568409b7ce10e4
