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Clojure Functional Programming & JVM Backend Development · Lesson

Connection Pooling & Transactions

Manage database connections efficiently with pooling and ensure data integrity using transactions in next.jdbc.

Why Connection Pooling?

Opening a new database connection for every query is slow and resource-heavy. A connection pool keeps a set of reusable connections ready, dramatically improving throughput.

The HikariCP Pool

The most popular JVM connection pool is HikariCP. The next.jdbc.connection namespace provides a helper to build a pooled datasource.

(require '[next.jdbc.connection :as connection])
(import '[com.zaxxer.hikari HikariDataSource])

All lessons in this course

  1. Connecting to Databases with next.jdbc
  2. Performing CRUD Operations
  3. Database Migrations & Schema Management
  4. Connection Pooling & Transactions
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