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AI & LLM integration patterns

Call LLM APIs, structure prompts, parse responses, and ship AI features safely.

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AI & LLM integration patterns medium

How to cache embeddings with a Python dict to avoid recomputation

Caches embeddings computed from text in a dictionary keyed by SHA-256 hash, returning cached results for repeated calls.

embedding cache dict
Python 
import hashlib
import time


class EmbeddingCache:
    def __init__(self):
        self.cache = {}

    def _hash_text(self, text):
        return hashlib.sha256(text.encode()).hexdigest()

    def get_embedding(self, text, compute_func):
        key = self._hash_text(text)
        if key not in self.cache:
          …
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