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  4. How to implement connection pooling in PostgreSQL?
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  4. How to implement connection pooling in PostgreSQL?

How to implement connection pooling in PostgreSQL?

Connection pooling is a technique used to improve the performance of database applications by reusing database connections rather than creating new ones for each request. In PostgreSQL, connection pooling can be implemented using a third-party tool like PgBouncer or by using the built-in connection pooler, pgpool-II.

Here are the steps to implement connection pooling using pgpool-II:

  1. Step 1- Install pgpool-II: Install pgpool-II on the same server where the PostgreSQL database is running or on a separate server.
  2. Step 2 – Configure pgpool-II: Edit the pgpool.conf file to set the pool mode, maximum number of connections, and other configuration options.
  3. Step 3 – Configure PostgreSQL: Edit the postgresql.conf file to allow connections from pgpool-II.
  4. Step 4 – Start pgpool-II: Start pgpool-II using the pgpool executable.
  5. Step 5 Test connection pooling: Connect to the PostgreSQL database using pgpool-II and test the connection pooling.

Here is a sample pgpool.conf file:

After configuring the pgpool-II, start the pgpool-II service and connect to the PostgreSQL database using the pgpool-II connection pool.

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