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Topic
#Payments
Everything I have written about Payments.
4 articles
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GitHub Portfolio Projects That Get Backend Interviews
#Payments>
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Designing a Wallet That Never Loses a Cent: Double-Entry Ledgers in Laravel and MySQL
#Payments>
A balance column created 1,800 out of nothing when 200 transfers ran at once. How to build a wallet on a double-entry ledger in Laravel and MySQL: postings, ordered locks, holds and reconciliation checks.
<#Payments class="bcard-title" lang="en" dir="ltr">
Idempotency Keys in Payment APIs: How to Stop Double Charges in Laravel
#Payments>
A customer taps Pay, the network drops, the app retries, and the card is charged twice. Here is how to make payment retries safe in Laravel and MySQL, tested with 50 simultaneous requests.
<#Payments class="bcard-title" lang="en" dir="ltr">
Payment Webhooks in Laravel: Signature Verification, Retries, and Replay-Safe Processing
#Payments>
Build a payment webhook endpoint in Laravel that verifies HMAC signatures, acks fast, survives retries and duplicates, and processes events safely with queues and MySQL.
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