CODING FINDS
Notes from the terminal.
Short write-ups of things I learned the hard way: the problem, the fix and the result, with the smallest snippet that shows it.
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Let the queue drop duplicate jobs
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Put a heavy job behind an "Export orders" button and every click queues another copy. Impatient users click two, three, ten times, and each click is another full export competing for the same workers and the same database. Guarding the dispatch with a cache flag looks like a fix, but Cache::has() followed by Cache::put() is two separate steps, so two quick requests can both get past the check. The flag also outlives the job: it stays set after the export has finished, so the button does nothing until the flag expires.
#[UniqueFor(900)]class ExportOrders implements ShouldQueue, ShouldBeUniquenumber_format() returns text, not a number
number_format($total, 2, '.', '');// "12499.90", not "12,499.90"Let your DTOs turn themselves into arrays
final readonly class ShippingQuote implements ArrayableStop N+1 queries before they ship
Model::preventLazyLoading( ! app()->isProduction());Know whether firstOrCreate() created the row
if ($subscriber->wasRecentlyCreated) { // inserted just now}Look up user-supplied IDs through the relationship
$project->tasks()->findOrFail($id);Match letters beyond a to z in regex
// Letters from any language"/^[\p{L}\p{M}' \-]+$/u"Page 1 of 1
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