Sandbox::https://github.com/samuuutrif/javascripting/blob/master/cache.py

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"""Cache TTL in memoria, chiave->(valore, scadenza). Nessuna dipendenza esterna."""

import threading

import time

class TTLCache:

def __init__(self):

self._store = {}

self._lock = threading.Lock()

def get(self, key):

with self._lock:

entry = self._store.get(key)

if entry is None:

return None

value, expires_at = entry

if time.time() > expires_at:

del self._store[key]

return None

return value

def set(self, key, value, ttl_seconds):

with self._lock:

self._store[key] = (value, time.time() + ttl_seconds)

def make_key(self, *parts):

return "|".join(str(p) for p in parts)

cache = TTLCache()

def round_coord(value, precision=4):

"""Arrotonda le coordinate per aumentare il colpo di cache su ricerche vicine (~10m a precision=4)."""

return round(float(value), precision)