Dual write consistency
Review this Java dual-write (DB + search index).
What a strong answer looks like
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.
0:00 of about 35 min
Mark a line and say what kind of problem it is.0 findings
1@Service
2public class ProductService {
3 private final ProductRepository productRepo;
4 private final SearchIndex searchIndex;
5 private final RedisCache cache;
6
7 public void createProduct(Product p) {
8 p.setId(UUID.randomUUID().toString());
9 productRepo.save(p); // Postgres
10 searchIndex.index(p); // Elasticsearch
11 cache.put(p.getId(), p); // Redis
12 }
13}
Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.
Run or narrate your approach, then ask the coach.