Keep a handle on your databases
 
 
- Connecting to a database can be slow
- Try to connect once and stay connected where practical
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- We'll discuss web server issues later
 
- The connect_cached() method … 
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- Acts like prepare_cached() but for database handles
- Like prepare_cached(), it’s handy for library code
- It also checks the connection and automatically reconnects if it's broken
- Works well combined with prepare_cached(), see following example