title: Is sqlite3 scalable to handle situations like high traffic social networking sites?
body: <p>Recently I have started learning rails and was a little surprised that the default database is sqlite3.</p>
  
  <p>I have used sqlite3 before for lightweight applications like programs that have their own personal database, embedded databases on iPhone apps and keeping a light database on a embedded system with a microcontroller, but I never thought of using it on a system as a drop in replacement for a more advanced DBMS like mysql.</p>
  
  <p>Can sqlite3 handle being the DBMS for high traffic sites?</p>