Uploaded May 2025 | Updated September 2026, 7 hours ago
We're using Laravel's atomic locks and database-generated columns to build a reliable reservation system—without race conditions or extra tables. I'll show you how to hook into Laravel’s cache lock system, add polymorphic relationships, and use generated columns to power powerful query scopes.
Atomic Locks Video: youtu.be/jGb5zIgwL4c
Follow me:
Twitter: twitter.com/aarondfrancis
LinkedIn: linkedin.com/in/aarondfrancis
Website: aaronfrancis.com - find articles, podcasts, courses, and more.
Our courses:
High Performance SQLite: highperformancesqlite.com
Mastering Postgres: masteringpostgres.com
High Leverage Rails: highleveragerails.com
Screencasting: screencasting.com
Chapters:
00:00 - What is an atomic lock?
02:00 - Two real-world locking scenarios
03:10 - Desired API design using reservation scopes
04:44 - Basic cache lock implementation
06:54 - Improving lock key visibility in database
08:34 - Moving toward database query integration
11:05 - Setting up polymorphic relationships
12:13 - Reusing Laravel’s cache_locks table
15:00 - Generating reservation keys programmatically
19:00 - Using generated columns to parse reservation keys
22:00 - Verifying morph relationship and query behavior
25:00 - Handling timing and collision issues
29:00 - Making key parsing more robust
32:00 - Filtering out expired or invalid locks
34:00 - Implementing unreserved and reserveFor scopes
38:00 - Building a reserve() method on the model
40:00 - Live testing reservation behavior
41:30 - Wrapping up: robust, multi-database reservation system
We're using Laravel's atomic locks and database-generated columns to build a reliable reservation system—without race conditions or extra tables. I'll show you how to hook into Laravel’s cache lock system, add polymorphic relationships, and use generated columns to power powerful query scopes.
Atomic Locks Video: youtu.be/jGb5zIgwL4c
Follow me:
Twitter: twitter.com/aarondfrancis
LinkedIn: linkedin.com/in/aarondfrancis
Website: aaronfrancis.com - find articles, podcasts, courses, and more.
Our courses:
High Performance SQLite: highperformancesqlite.com
Mastering Postgres: masteringpostgres.com
High Leverage Rails: highleveragerails.com
Screencasting: screencasting.com
Chapters:
00:00 - What is an atomic lock?
02:00 - Two real-world locking scenarios
03:10 - Desired API design using reservation scopes
04:44 - Basic cache lock implementation
06:54 - Improving lock key visibility in database
08:34 - Moving toward database query integration
11:05 - Setting up polymorphic relationships
12:13 - Reusing Laravel’s cache_locks table
15:00 - Generating reservation keys programmatically
19:00 - Using generated columns to parse reservation keys
22:00 - Verifying morph relationship and query behavior
25:00 - Handling timing and collision issues
29:00 - Making key parsing more robust
32:00 - Filtering out expired or invalid locks
34:00 - Implementing unreserved and reserveFor scopes
38:00 - Building a reserve() method on the model
40:00 - Live testing reservation behavior
41:30 - Wrapping up: robust, multi-database reservation system
