The client sees the old balance after a successful withdrawal yesterday. What could be the reason?

The reasons why a client might see an old balance after a successful withdrawal could be the following:

• Client-side caching: balance data may have been cached in the browser or app and not updated after the operation.
• Lack of data refresh after the transaction: no request was made to update the balance from the server after a successful withdrawal.
• Asynchrony and replication delays: if the database or cache updates with delay, the client may receive outdated data.
• Transaction or data consistency issues: perhaps the withdrawal operation was successful, but the balance in the database was not updated correctly.
• Frontend logic errors: for example, the balance is taken from local state, which is not updated.

For diagnostics, check operation logs, ensure that a request to get the current balance is made after withdrawal, and verify caching on the client and server.