Abstract: The present disclosure provides a method for leveling loads of distributed databases, including: counting loads of all servers in a distributed database system and a load proportion of each data slice loaded on each server during a statistical period; ranking respective servers according to loads of the respective servers from the highest to the lowest, allocating n top-ranked servers as high-load servers, allocating n bottom-ranked servers as low-load servers; ranking data slices loaded on an i-th ranked high-load server; ranking data slices loaded on an i-th inversely ranked low-load server; allocating a data slice on a high-load server as a source data slice, allocating a data slice on a low-load server as a target data slice, and swapping the source data slice and the target data slice. The present disclosure further discloses an apparatus for leveling loads of distributed databases.

Abstract: The present disclosure provides a method for leveling loads of distributed databases, including: counting loads of all servers in a distributed database system and a load proportion of each data slice loaded on each server during a statistical period; ranking respective servers according to loads of the respective servers from the highest to the lowest, allocating n top-ranked servers as high-load servers, allocating n bottom-ranked servers as low-load servers; ranking data slices loaded on an i-th ranked high-load server; ranking data slices loaded on an i-th inversely ranked low-load server; allocating a data slice on a high-load server as a source data slice, allocating a data slice on a low-load server as a target data slice, and swapping the source data slice and the target data slice. The present disclosure further discloses an apparatus for leveling loads of distributed databases.