Multi Mine Mod allow you to pause and take a break whenever you want. It is networked for multiple people on a server, so you can take turns beating blocks or mine together for higher speed.
Block Damage is limited to 30 Blocks at a time across the server. It is not saved, it does not interfere with your savegames. Damaged Blocks regenerate ?slowly? after an initial short duration.
For Minecraft 1.11
For Minecraft 1.11.2