Have you encountered situations where the number of article views in the database was incorrectly increased when multiple users opened the article simultaneously?

Yes, such a problem occurs due to a race condition when multiple users update the view counter in the database simultaneously. If several requests read the current view count, increment it, and write it back at the same time, some updates may be lost.

To solve this, you can use:

• Locking transactions: lock the record during update so other requests wait.
• Atomic database operations: for example, the SQL query UPDATE articles SET views = views + 1 WHERE id = ? performs an atomic increment.
• Optimistic locking: check the record's version before updating.

Example of an atomic update in SQL:

UPDATE articles SET views = views + 1 WHERE id = 123;

This guarantees that the view count increment is correct even with concurrent requests.