While -XX:+UseG1GC is the default in Java 21, explicitly setting it for a container limited to 600MB (as seen in docker-compose.prod.yml) might not be optimal. G1GC is generally more effective for larger heaps. For a heap size around 400MB (70% of 600MB), you might consider testing SerialGC or ParallelGC to see if they provide better performance with lower overhead in this resource-constrained environment.

Running the Jaeger container as root (user: "0") is a security risk, even for internal tools. It is better to ensure the host directory has the correct permissions for the container's default user or to specify a non-root UID that matches the host's directory owner.

The LocalTime.parse method will throw a NullPointerException if store.getOpenTime() or store.getCloseTime() returns null. Although there is a catch block, it is safer and more idiomatic to perform a null check before parsing to avoid unnecessary exception overhead.

                String openTimeStr = store.getOpenTime();
                String closeTimeStr = store.getCloseTime();
                if (openTimeStr == null || closeTimeStr == null) {
                    log.warn("[영업시간 누락] storeId={}", store.getId());
                    continue;
                }
                LocalTime openTime = LocalTime.parse(openTimeStr, TIME_FORMATTER);
                LocalTime closeTime = LocalTime.parse(closeTimeStr, TIME_FORMATTER);