meta

const (
	// local is in (0x01, 0x02)
	LocalPrefix byte = 0x01

	// We save two types region data in DB, for raft and other meta data.
	// When the store starts, we should iterate all region meta data to
	// construct peer, no need to travel large raft data, so we separate them
	// with different prefixes.
	RegionRaftPrefix    byte = 0x02
	RegionMetaPrefix    byte = 0x03
	RegionRaftPrefixLen      = 11 // REGION_RAFT_PREFIX_KEY + region_id + suffix
	RegionRaftLogLen         = 19 // REGION_RAFT_PREFIX_KEY + region_id + suffix + index

	// Following are the suffix after the local prefix.
	// For region id
	RaftLogSuffix    byte = 0x01
	RaftStateSuffix  byte = 0x02
	ApplyStateSuffix byte = 0x03

	// For region meta
	RegionStateSuffix byte = 0x01
)

const (
	// When we create a region peer, we should initialize its log term/index > 0,
	// so that we can force the follower peer to sync the snapshot first.
	RaftInitLogTerm  = 5
	RaftInitLogIndex = 5
)