public void TestRedisCacheTimeToLive_FromInsert()
{
var ttl = 10;
int misses = 0;
string result;
var stopwatch = new Stopwatch();
Func <string> getter = () => { misses++; return(misses.ToString()); };
var cache = new RedisCache(
"insert-expire-cache",
new RedisCachePolicy
{
ExpirationFromAdd = TimeSpan.FromSeconds(ttl),
});
cache.ClearAll();
stopwatch.Start();
result = cache.Get("key", getter);
Assert.AreEqual(1, misses);
Assert.AreEqual("1", result);
result = cache.Get("key", getter);
Assert.AreEqual(1, misses);
Assert.AreEqual("1", result);
CacheTestTools.AssertValueDoesntChangeWithin(cache, "key", "1", getter, stopwatch, ttl - 1);
// Should expire within TTL+60sec from insert
CacheTestTools.AssertValueDoesChangeWithin(cache, "key", "1", getter, stopwatch, 60.1);
result = cache.Get("key", getter);
Assert.AreNotEqual(1, misses);
Assert.AreNotEqual("1", result);
}
public void TestRedisCacheTimeToLive_Constant()
{
var ttl = 10;
int misses = 0;
string result;
var stopwatch = new Stopwatch();
Func <string> getter = () => { misses++; return(misses.ToString()); };
var expireAt = DateTime.Now.AddSeconds(ttl);
stopwatch.Start();
var cache = new RedisCache(
"constant-expire",
new RedisCachePolicy
{
ConnectionString = connectionString,
AbsoluteExpiration = expireAt,
});
cache.ClearAll();
result = cache.Get("key", getter);
DateTime insertTime = DateTime.Now;
Assert.AreEqual(1, misses);
Assert.AreEqual("1", result);
result = cache.Get("key", getter);
Assert.AreEqual(1, misses);
Assert.AreEqual("1", result);
CacheTestTools.AssertValueDoesntChangeWithin(cache, "key", "1", getter, stopwatch, ttl - 1);
// Should expire within TTL+60sec from insert
CacheTestTools.AssertValueDoesChangeWithin(cache, "key", "1", getter, stopwatch, 60.1);
result = cache.Get("key", getter);
Assert.AreNotEqual(1, misses);
Assert.AreNotEqual("1", result);
}
public void TestRedisCacheTimeToLive_Sliding()
{
var ttl = 10;
int misses = 0;
string result;
var stopwatch = new Stopwatch();
Func <string> getter = () => { misses++; return(misses.ToString()); };
var cache = new RedisCache(
"sliding-expire-cache",
new RedisCachePolicy
{
ConnectionString = connectionString,
SlidingExpiration = TimeSpan.FromSeconds(ttl),
});
cache.ClearAll();
stopwatch.Start();
result = cache.Get("key", getter);
DateTime insertTime = DateTime.Now;
Assert.AreEqual(1, misses);
Assert.AreEqual("1", result);
result = cache.Get("key", getter);
Assert.AreEqual(1, misses);
Assert.AreEqual("1", result);
CacheTestTools.AssertValueDoesntChangeWithin(cache, "key", "1", getter, stopwatch, ttl - 1 + 60);
// Should expire within TTL+60sec from last access
CacheTestTools.AssertValueDoesChangeAfter(cache, "key", "1", getter, stopwatch, ttl + 60.1);
result = cache.Get("key", getter);
Assert.AreNotEqual(1, misses);
Assert.AreNotEqual("1", result);
}
