Find occurrences of huge list of phrases in text

Question

I\'m building a backend and trying to crunch the following problem.

• The clients submit text to the backend (around 2000 characters on average)

Answer 1

You should try a string search / pattern matching algorithm. Most famous algorithm for you task is the Aho-Corasick there is a python library for it (of the top of google search)

Most of the pattern matching / string search algorithms will require you to convert your "bag of words/phrases" into a trie.