WebScaleSQL是Facebook、Google、LinkedIn以及Twitter四家公司對MySQL5.6 的 fork。
而Percona的人也針對 WebScaleSQL 與Percona Server 5.6的比較，寫了一篇技術分析的文章：「A technical WebScaleSQL review and comparison with Percona Server」。
Percona 那篇分析文章提到不少改善屬於比較激進類型，對於Percona Server以及 MySQL 官方版本的定位並不適合。
而在開發上，語法也換到C99與C++11，也就是打算拋棄很舊的系統 (沒有 C99/C++11 compiler)。不過就這點來說，使得這上面的 patch 要 backport 回 MySQL 又增加了一些狀況…
WebScaleSQL 的出現代表 MySQL fork 又多一家，而且因為背後是這四家公司搞出來的，看起來聲勢會很浩大。進入「合久必分」的階段…
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