b3z
commented
3 years ago https://oss.redislabs.com/redisearch/Commands/#suggestions
need to make a suggestion dict
Another important feature for RediSearch is its auto-complete engine. This allows users to create dictionaries of weighted terms, and then query them for completion suggestions to a given user prefix. Completions can have "payloads" - a user-provided piece of data that can be used for display. For example, completing the names of users, it is possible to add extra metadata about users to be displayed al
For example, if a user starts to put the term “lcd tv” into a dictionary, sending the prefix “lc” will return the full term as a result. The dictionary is modeled as a compact trie (prefix tree) with weights, which is traversed to find the top suffixes of a prefix.
RediSearch also allows for Fuzzy Suggestions, meaning you can get suggestions to prefixes even if the user makes a typo in their prefix. This is enabled using a Levenshtein Automaton, allowing efficient searching of the dictionary for all terms within a maximal Levenshtein Distance of a term or prefix. Then suggestions are weighted based on both their original score and their distance from the prefix typed by the user.
However, searching for fuzzy prefixes (especially very short ones) will traverse an enormous number of suggestions. In fact, fuzzy suggestions for any single letter will traverse the entire dictionary, so we recommend using this feature carefully, in consideration of the performance penalty it incurs.
RediSearch's auto-completer supports Unicode, allowing for fuzzy matches in non-latin languages as well.
add autosuggestion on typing. Redisearch should support that.