Medium Full Stack Developer questions

34 questions · 10 points each for a correct first answer.

1. 1.JWT in localStorageauthentication, securitymedium
2. 2.The N+1 query problemdatabases, performancemedium
3. 3.CSRF with cookie sessionssecurity, authenticationmedium
4. 4.Server Components and the databasenextjs, react-server-componentsmedium
5. 5.Offset vs cursor paginationapi-design, databasesmedium
6. 6.Optimistic update failsstate-management, uxmedium
7. 7.Renaming a column safelydatabases, deploymentmedium
8. 8.Caching hashed static filescaching, performancemedium
9. 9.One failing widget breaks the dashboardasync-await, error-handling, resiliencemedium
10. 10.Three awaits, three times slowerasync-await, performancemedium
11. 11.Hiding the button is not authnextjs, authorization, server-actionsmedium
12. 12.Old title after savingnextjs, cachingmedium
13. 13.When SameSite=Lax cookies are sentcookies, csrfmedium
14. 14.One schema for form and APItypescript, validation, api-designmedium
15. 15.Moving credits between accountsprisma, transactions, sqlmedium
16. 16.Composite index column ordersql, indexing, database-performancemedium
17. 17.Search shows results for old inputreact, race-conditions, data-fetchingmedium
18. 18.Returning form validation errorsapi-design, error-handlingmedium
19. 19.ETag and If-None-Matchhttp-caching, performancemedium
20. 20.Rate limiter that does not limitrate-limiting, redis, api-securitymedium
21. 21.Serving private invoice PDFsfile-storage, authorization, awsmedium
22. 22.Slow Docker builds on every changedocker, ci-cdmedium
23. 23.Changed env var, old value in browsernextjs, configuration, deploymentmedium
24. 24.Users see each other’s profilehttp-caching, cdn, web-securitymedium
25. 25.User bios rendered as HTMLxss, web-security, reactmedium
26. 26.Sensitive data inside a JWTjwt, authenticationmedium
27. 27.Type cast on fetch responsetypescript, api-contractsmedium
28. 28.GraphQL author lookupsgraphql, database-performancemedium
29. 29.Webhook signature always failswebhooks, nodejs, api-securitymedium
30. 30.One report slows every requestnodejs, event-loop, performancemedium
31. 31.Tracing one failed checkoutobservability, loggingmedium
32. 32.Releasing a risky checkoutfeature-flags, deploymentmedium
33. 33.Flaky end-to-end teste2e-testing, playwrightmedium
34. 34.Relative fetch on the servernextjs, react-server-components, data-fetchingmedium