School Commit Init

2024-08-31 12:07:21 +03:00
commit 0b130ee18c
2801 changed files with 4720552 additions and 0 deletions
@@ -0,0 +1,123 @@
+using System;
+using System.Collections.Generic;
+
+public class CacheModule<T>
+{
+    private readonly Dictionary<string, CacheItem<T>> cache = new Dictionary<string, CacheItem<T>>();
+    private readonly object @lock = new object();
+    public T Get(string key)
+    {
+        lock (@lock)
+        {
+            if (cache.TryGetValue(key, out CacheItem<T> cacheItem))
+            {
+                if (!cacheItem.IsExpired())
+                {
+                    return cacheItem.Value;
+                }
+                else
+                {
+                    cache.Remove(key);
+                }
+            }
+            return default(T);
+        }
+    }
+    public void Set(string key, T value, TimeSpan expirationTime)
+    {
+        lock (@lock)
+        {
+            var expirationTimeUtc = DateTime.UtcNow.Add(expirationTime);
+            cache[key] = new CacheItem<T>(value, expirationTimeUtc);
+        }
+    }
+    public void Remove(string key)
+    {
+        lock (@lock)
+        {
+            cache.Remove(key);
+        }
+    }
+    public void Clear()
+    {
+        lock (@lock)
+        {
+            cache.Clear();
+        }
+    }
+    private class CacheItem<TValue>
+    {
+        public TValue Value { get; }
+        public DateTime ExpirationTimeUtc { get; }
+
+        public CacheItem(TValue value, DateTime expirationTimeUtc)
+        {
+            Value = value;
+            ExpirationTimeUtc = expirationTimeUtc;
+        }
+
+        public bool IsExpired()
+        {
+            return DateTime.UtcNow >= ExpirationTimeUtc;
+        }
+    }
+}
+/*
+class Program
+{
+    static void Main(string[] args)
+    {
+        var cache = new CacheModule<string>();
+
+        cache.Set("key1", "value1", TimeSpan.FromSeconds(5));
+
+        string cachedData = cache.Get("key1");
+        Console.WriteLine("Cached Data: " + cachedData);
+
+
+        Console.WriteLine("Waiting for 3 seconds...");
+        System.Threading.Thread.Sleep(3000);
+
+        cachedData = cache.Get("key1");
+        Console.WriteLine("Cached Data after 3 seconds: " + cachedData);
+
+        Console.WriteLine("Waiting for 3 more seconds...");
+        System.Threading.Thread.Sleep(3000);
+
+        cachedData = cache.Get("key1");
+        if (cachedData != null)
+        {
+            Console.WriteLine("Cached Data after 6 seconds: " + cachedData);
+
+        }
+        else
+        { Console.WriteLine("Expiration time exceeded!"); }
+
+
+
+        cache.Set("key1", "value1", TimeSpan.FromSeconds(5));
+        cache.Set("key2", "value2", TimeSpan.FromSeconds(5));
+        string cachedData1 = cache.Get("key1");
+        string cachedData2 = cache.Get("key2");
+
+        Console.WriteLine("Cached Data 1: " + cachedData1);
+        Console.WriteLine("Cached Data 2: " + cachedData2);
+
+        cache.Remove("key1");
+
+        cachedData1 = cache.Get("key1");
+
+        Console.WriteLine("Cached Data 1 after remove: " + cachedData1);
+        Console.WriteLine("Cached Data 2 after remove: " + cachedData2);
+        cache.Clear();
+        string cachedDataFinal = cache.Get("key2");
+        Console.WriteLine("Cached Data 2 after clear: " + cachedDataFinal);
+
+
+
+
+
+
+    }
+}
+*/