ThingsMaster will occupy more and more computer memory space during runtime. Is there a way to set it to overwrite old data instead of accumulating it?

OTA: Memory can be released through Linux drop_cache:
sudo sysctl vm.drop_caches=1
Reference：https://huataihuang.gitbooks.io/cloud-atlas/content/os/linux/kernel/memory/drop_caches_and_compact_memory.html