apollo-core/src/main/java/com/ctrip/framework/apollo/core/utils/DeferredLogCache.java/DeferredLogCache/replayTo
class DeferredLogCache:  static void replayTo() {
    for (int i = 1; i <= LOG_INDEX.get(); i++) {
      Line logLine = LOG_CACHE.getIfPresent(i);
      if (logLine == null) {
        continue;
      }
      Logger logger = logLine.getLogger();
      Level level = logLine.getLevel();
      String message = logLine.getMessage();
      Object[] objects = logLine.getObjects();
      Throwable throwable = logLine.getThrowable();
      logTo(logger, level, message, objects, throwable);
    }
    clear();
  }