What is the best way to build an auto complete

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1

Hello friends

What is the best way to build an auto complete program in terms of performance ??

Also consider that I want to prioritize information whose names start with the text that the user is searching for.

2

Hi Amir,
The new terms enum api may be of interest

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Is the performance of _terms_enum in data around 50 GB to 100 GB or more better than ngram + wildcard or search as you type or suggesters?

And should the field type be keyword type or some other special type?

4

It uses the search index directly to quickly look up values in the sorted list of unique terms held in the index. This cost can be independent of number of docs.

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So it means it has better performance, right ??

And that given that it should only be the keyword field type

How to use the analyzer?

6

We've had solutions before that use in-memory FSTs which are fast but have to be declared up-front with a special index and can cost a lot of RAM.
The terms_enum api is new and doesn't any required special structures. I haven't benchmarked

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