Boleto with Pix: how to prevent duplicate payments in hybrid billing
Learn how to link boleto and Pix to one obligation, confirm payments, and handle cancellation, duplicate receipts, and refunds with traceability.
Pix Automático for subscriptions: authorization, billing, and cancellation in practice
Understand authorization, cycles, failures, and cancellation in Pix Automático, and how to separate the commercial subscription from each payment’s states.
PSP migration: how to plan the transition without interrupting recurring charges
Plan a PSP migration with a token inventory, group-based cutover, control of pending cycles, reconciliation, and rollback criteria.
Split payments in marketplaces: allocation, payouts, and reconciliation without confusion
Learn to separate split allocation, capture, settlement, and payouts, with an example covering fees, partial refunds, and reconciliation by recipient.
Payment timeouts: what to do when the PSP does not respond but the charge may have happened
Learn to handle timeouts, unknown states, retries, idempotency, failover, and reconciliation without creating duplicate charges.
Payment ledgers: why balances, transactions, and financial movements are different
Understand ledgers, accounts, entries, double-entry bookkeeping, available balances, fees, refunds, payouts, and reconciliation in financial infrastructure.
Idempotency in payment APIs: how to prevent duplicate charges during retries
Understand idempotency keys, deduplication, retries, concurrency, webhooks, and state machines to prevent duplicate financial effects.
Zero Auth in payments: how to validate a card without charging it
Understand how Zero Auth verifies a credential without a conventional charge and where it fits into tokenization, card-on-file, subscriptions, and payment architecture.
Payment reconciliation: how to verify that sales, captures, and settlement match
Learn how to reconcile orders, charges, captures, fees, refunds, and settlements to explain financial discrepancies with a traceable record.
Payments on Black Friday 2026: what to test before peak sales
Prepare payments for Black Friday with load, Pix, card, timeout, and webhook tests, plus recovery and reconciliation criteria.
Payment observability: finding where and why a transaction failed
Logs, metrics, traces, and states for investigating failures, latency, and performance in multi-PSP payment infrastructure.
Payment failover: building redundancy without duplicate charges
Learn how to design payment failover, retries, and fallback with idempotency, state management, and protection against duplicate charges.
Recurring payments: designing subscriptions, billing cycles, and card-on-file
Understand subscriptions, tokenization, card-on-file, retries, dunning, and the states needed for reliable recurring payments.
Card tokenization: PAN, vaults, card-on-file, and network tokens explained
Understand card tokenization, vaults, card-on-file, network tokens, portability, and the impact of credentials on a multi-PSP architecture.
Payment webhooks: preventing duplicate events and inconsistent states
Learn to authenticate, deduplicate, and process payment webhooks with idempotency, retries, ordering, and observability.