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Python Code Samples

Medium snippets you can copy, study, and run in the browser editor.

4 matches
Dictionaries & sets medium

LRU Cache with OrderedDict in Python

Implement an LRU cache using collections.OrderedDict to track insertion order and evict the least-recently-used item when capacity is exceeded.

lru-cache ordereddict caching
Python 
from collections import OrderedDict

class LRUCache:
    def __init__(self, capacity):
        self.capacity = capacity
        self.cache = OrderedDict()

    def get(self, key):
        if key not in self.cache:
            return -1
        self.cache.move_to_end(key)
        return self.cache[key]

    def put(sel…
14 0 Open
Caching & Redis medium

How to Implement a Redis-Like Cache Dictionary in Python

Build a RedisMockDict class that mimics basic Redis key-value operations with TTL support, expiry cleanup, and standard dict-like methods.

redis cache ttl
Python 
from collections import OrderedDict
import time

class RedisMockDict:
    def __init__(self, ttl=None):
        self._data = OrderedDict()
        self._ttl = ttl  # default TTL in seconds, None = no expiry
        self._expiry = {}

    def set(self, key, value, ttl=None):
        """Set a key-value pair with optiona…
12 0 Open
Observability & SRE medium

How to Track Cache Hit Ratio in Python

Simulate an LRU cache with hit/miss tracking and compute a real-time hit ratio from random access patterns.

cache lru hit-ratio
Python 
import random
import time
from collections import OrderedDict

class LRUCache:
    def __init__(self, capacity: int):
        self.cache = OrderedDict()
        self.capacity = capacity
        self.hits = 0
        self.misses = 0

    def get(self, key):
        if key in self.cache:
            self.hits += 1
     …
13 0 Open
ML engineering pipelines medium

How to Mock a Kubeflow Pipeline in Python

Build a minimal in-memory mock of a Kubeflow pipeline DAG using dataclasses and OrderedDict to chain component functions.

kubeflow pipelines mlops
Python 
from typing import Dict, Any
from dataclasses import dataclass, field
from collections import OrderedDict


@dataclass
class KubeflowPipelineMock:
    """A minimal mock of a Kubeflow pipeline DAG."""
    name: str
    components: OrderedDict[str, callable] = field(default_factory=OrderedDict)

    def add_component(se…
14 0 Open

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