Config cache visibility
Review this Java background loader. One thread runs `loadLoop()`; request threads call `current()`.
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 30 min
Mark a line and say what kind of problem it is.0 findings
1class ConfigCache {
2 private Map<String,String> config = Collections.emptyMap();
3
4 void reload(Map<String,String> fresh) {
5 config = fresh; // swap reference
6 }
7
8 String get(String key) {
9 return config.get(key); // read
10 }
11}
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.