Code reviewMediumcr-g146

Subject Leaky abstractionsLevel Mid–Senior~22 minCommon in Code quality & review interviewsIndustries Software development

Question

Review this Java registration endpoint.

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Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix — specific and kind.

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Code to reviewjava

1@PostMapping("/register")2public ResponseEntity<User> register(@RequestBody RegisterReq req) {3    User u = new User(req.getEmail(), hash(req.getPassword()));4    userRepo.save(u);   // unique constraint on email5    return ResponseEntity.ok(u);6}

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