- Reduces GoCardless API calls by up to 99% through intelligent caching of transaction data
- Secure AES-GCM encryption with PBKDF2 key derivation (200k iterations) for at-rest storage
- Automatic range merging and transaction deduplication to minimize storage and API usage
- Cache-first approach with automatic fetching of uncovered date ranges
- Comprehensive test suite with 30 unit tests covering all cache operations and edge cases
- Thread-safe implementation with in-memory caching and encrypted disk persistence
- Validate amounts are non-zero and within reasonable bounds (≤1B)
- Validate currency codes are 3 uppercase ASCII letters
- Apply validation to main and foreign amounts/currencies
- Add comprehensive tests for validation logic
- Maintain graceful error handling for invalid data
- Implement robust End User Agreement expiry detection and handling
- Add graceful error recovery for failed accounts
- Rewrite README.md to focus on user benefits
- Add documentation guidelines to AGENTS.md
The official Gocardless API definition indicates that transactions are
directly output to an array.
Instead, they are wrapped in a transactions key.
This made the code fail to retrieve transactions, because they could not
be correctly serialized.
This is now fixed in the API definition, and the API code is also
regenerated.
Signed-off-by: Jacob Kiers <code@kiers.eu>
