Adaptive connection pooling for multi-tenant applications

A system, comprising:

• a network connection to a network;
• a processor coupled to a computer memory having instructions that, when read by the processor, cause the processor to:
• intercept communications from a plurality of applications that are directed to a database layer comprising a plurality of databases;
• analyze the intercepted communications directed to the database layer to determine an optimized number of database connections to connect the database layer to the plurality of applications;
• establish the optimized number of database connections;
• receive communications directed to ones of the plurality of applications received via the optimized number of database connections;
• and
• forward the received communications directed to the one or more of the plurality of applications to the plurality of applications via the optimized number of database connections,
• wherein analyzing the communications directed to the database layer to determine the optimized number of database connections to connect the database layer to the plurality of applications, comprises determining, based on the intercepted communications directed to the database layer that determines a current resource score for a current number of database connections to connect the database layer to the plurality of applications and a candidate resource score comprising one or more of a delay imposed by the current number of database connections being shared by the plurality of applications, a delay reduction imposed by incrementing the current number of database connections being shared by the plurality of applications, a delay increase imposed by decrementing the current number of database connections being shared by the plurality of applications, a setup resource cost to increment the current number of database connections being shared by the plurality of applications, a teardown resource cost imposed by decrementing the current number of database connections being shared by the plurality of applications, and an active resource cost imposed by maintaining the current number of database connections being shared by the plurality of applications.