Module layout 

Structs

FileHeader

File layout header

Region

Region in the file

Constants

BLOCK_SIZE

Block size (4KB) - fundamental unit of I/O

DB_MAGIC

Magic number for database file (big-endian)

DB_VERSION

Current file format version

DEFAULT_MANIFEST_SIZE

Default Manifest ring size (4MB)

DEFAULT_WAL_SIZE

Default WAL ring size (64MB)

HEADER_SIZE

File header size (4KB)