Most developers write SQL that works. Few write SQL that's fast.

The difference? Understanding what happens between your query and the result set. The query planner, the index scanner, the join algorithms, the lock manager — these are the systems that determine whether your query runs in 2ms or 20 seconds.

Here's a quick test: Can you look at an EXPLAIN ANALYZE output and immediately identify the bottleneck? Do you know why a composite index on (user_id, created_at) performs differently than (created_at, user_id)? Can you explain when a Hash Join beats a Nested Loop?

If not, that's exactly what QueryForge: Advanced SQL Query Optimization teaches.

This course is built for backend developers and Node.js engineers who are tired of:

• Queries that work in development but crawl in production

• Adding random indexes and hoping something sticks

• ORM-generated SQL that fires 200 queries per request

• Database performance being a black box

6 modules. 20 lessons. 3 real-world optimization labs.

From EXPLAIN plans to partitioning strategies to deadlock resolution — everything you need to write SQL that scales.

Start with a free trial and see for yourself. 🛠️

Most developers write SQL that works. Few write SQL that's fast.

The difference? Understanding what happens between your query and the result set. The query planner, the index scanner, the join algorithms, the lock manager — these are the systems that determine whether your query runs in 2ms or 20 seconds.

Here's a quick test: Can you look at an EXPLAIN ANALYZE output and immediately identify the bottleneck? Do you know why a composite index on (user_id, created_at) performs differently than (created_at, user_id)? Can you explain when a Hash Join beats a Nested Loop?

If not, that's exactly what QueryForge: Advanced SQL Query Optimization teaches.

This course is built for backend developers and Node.js engineers who are tired of:

• Queries that work in development but crawl in production

• Adding random indexes and hoping something sticks

• ORM-generated SQL that fires 200 queries per request

• Database performance being a black box

6 modules. 20 lessons. 3 real-world optimization labs.

From EXPLAIN plans to partitioning strategies to deadlock resolution — everything you need to write SQL that scales.

Start with a free trial and see for yourself. 🛠️