Single IO Operation Integer-Value Database

A system comprising:

• one or more processors;
• and
• a memory storing instructions that, when executed by the one or more processors, cause the system to:
• receive a value to be written to a database, the database including a plurality of segments stored on a storage medium;
• assign an assigned key to the value based on keys previously used in the database;
• store the assigned key and the value to a segment at a virtual end of the database, wherein the segment is identified in a mapping index by an offset and the mapping index identifies a first key in the segment;
• and
• return the assigned key.

A computer-implemented method comprising:

• receiving, at a database management system, a read request including a key;
• determining, at the database management system, a segment corresponding to the key based on an index;
• locating, at the database management system, the segment in the database;
• locating, at the database management system, the key in the segment;
• returning, at the database management system, a value associated with the key.