Cache of suggested suggestions

[vkatsuba]

sheldon version

0.2.0

OS version

Ubuntu

Description

• Motivation
  An incorrect 4-character word can create about +- 250 possible suggestions. In the current implementation, the generating of suggestions happens each time for any duplicates words which ultimately increases the load to system.
• Proposal
  Add separate table for already generated suggested suggestions as for success as for empty suggestions for each word what was already checked.

Current behavior

Cache of suggested suggestions is missed.

Expected behavior

Cache of suggested suggestions is missed implemented.

Config

Optional: it might be worth considering an additional option to enable and disable the cache of suggested suggestions.