Easy Backend Developer questions

34 questions · 5 points each for a correct first answer.

1. 1.Status code after creating a resourcehttp, rest-api-designeasy
2. 2.The non-idempotent methodhttp, idempotencyeasy
3. 3.Stopping SQL injectionsecurity, sqleasy
4. 4.How to store passwordssecurity, authenticationeasy
5. 5.Purpose of a database indexsql, database-indexingeasy
6. 6.What stateless means in RESTrest-api-designeasy
7. 7.401 or 403http, authorizationeasy
8. 8.Keeping secrets out of codesecurity, configurationeasy
9. 9.Updating only one fieldhttp, rest-api-designeasy
10. 10.Status code for too many requestshttp, rate-limitingeasy
11. 11.Rows returned by a LEFT JOINsql, joinseasy
12. 12.What a foreign key enforcessql, data-modellingeasy
13. 13.Atomicity in a money transfertransactions, sqleasy
14. 14.Browser blocks a call that curl allowshttp, web-securityeasy
15. 15.What a 504 from Nginx meanshttp, debuggingeasy
16. 16.Docker image versus containerdockereasy
17. 17.Redis TTL after SET with EXredis, cachingeasy
18. 18.Undoing a bad commit on maingiteasy
19. 19.Promise and setTimeout ordernodejs, event-loopeasy
20. 20.COUNT and AVG with NULLssql, aggregationeasy
21. 21.Filtering grouped resultssql, aggregationeasy
22. 22.Naming a test that uses a real DBtestingeasy
23. 23.Why structured logs helpobservability, loggingeasy
24. 24.What HttpOnly does on a cookieweb-security, authenticationeasy
25. 25.Storing times for global usersdata-modelling, best-practiceseasy
26. 26.A GET that deletes datahttp, rest-api-designeasy
27. 27.Embed or reference in MongoDBmongodb, data-modellingeasy
28. 28.Slow email during signupmessage-queues, performanceeasy
29. 29.Duplicate emails despite a checksql, concurrencyeasy
30. 30.Python default list surprisepython, debuggingeasy
31. 31.What EXPLAIN tells yousql, performanceeasy
32. 32.Content-Type versus Accepthttpeasy
33. 33.What HTTPS leaves visibleweb-security, httpeasy
34. 34.Database user for the appsecurity, sqleasy