public void CachingReloadableEntry_CachedAndRenewed_Exist()
{
var expirationTime = 300;
var timeout = 200;
var config = InitConfig();
config.ExpirationTime = TimeSpan.FromMilliseconds(expirationTime);
var _cache = new InMemoryCache(config);
var key = "test_value";
var value = new CachedModel();
var entry = new ReloadableCacheEntry(key, () => { value.Value++; return(value); });
_cache.Set(entry);
Thread.Sleep(timeout);
var cachedValue = _cache.Get <CachedModel>(key);
Thread.Sleep(timeout);
cachedValue = _cache.Get <CachedModel>(key);
Assert.NotNull(cachedValue);
}
public void Get_NestedGetWithoutLock_2Hits()
{
//Arrange
var cache = new InMemoryCache("cache1",
new InMemoryPolicy {
SlidingExpiration = new TimeSpan(0, 2, 0), DoNotLock = true, NumberOfLocks = 1
});
int hits = 0;
int Get()
{
cache.Get("key2", () => 0);
hits++;
return(hits);
}
//Act
var result1 = cache.Get("key", (Func <int>)Get);
var hits1 = hits;
var result2 = cache.Get("key", (Func <int>)Get);
var hits2 = hits;
//Assert
Assert.AreEqual(1, hits1);
Assert.AreEqual(1, result1);
Assert.AreEqual(1, hits2);
Assert.AreEqual(1, result2);
}
public void TestInMemoryCacheTimeToLive_FromInsert()
{
var ttl = 3;
int misses = 0;
string result;
var stopwatch = new Stopwatch();
Func <string> getter = () => { misses++; return(misses.ToString()); };
var cache = new InMemoryCache(
"insert-expire-cache",
new InMemoryPolicy
{
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);
// 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);
}
[Ignore] // Now reentrant locking is supported
public void Get_NestedGetWithLock_Deadlock()
{
//Arrange
var cache = new InMemoryCache("cache1",
new InMemoryPolicy {
SlidingExpiration = new TimeSpan(0, 2, 0), DoNotLock = false, NumberOfLocks = 1
});
int hits = 0;
int Get()
{
cache.Get("key2", () => 0);
hits++;
return(hits);
}
var tokenSource = new CancellationTokenSource();
//Act
var t = Task.Factory.StartNew(() => cache.Get("key", Get), tokenSource.Token);
var finished = t.Wait(TimeSpan.FromSeconds(2));
//Assert
Assert.AreEqual(false, finished);
Assert.AreEqual(0, hits);
tokenSource.Cancel();
}
public void CachingEntry_CachedAndRenewed_Exist()
{
var expirationTime = 300;
var timeout = 200;
var config = InitConfig();
config.ExpirationTime = TimeSpan.FromMilliseconds(expirationTime);
var _cache = new InMemoryCache(config);
var key = "test_value";
var value = new CachedModel();
_cache.Set(key, value);
Thread.Sleep(timeout);
// renew sliding expiration by _cache.Get
var cachedValue = _cache.Get <CachedModel>(key);
Thread.Sleep(timeout);
cachedValue = _cache.Get <CachedModel>(key);
Assert.NotNull(cachedValue);
Assert.Equal(value, cachedValue);
}
public void AddAddsItemToCache()
{
// arrange
const string key = "key";
const string value = "value";
// act
_cache.Add(key, value);
// assert
_cache.Get().Should().HaveCount(1);
_cache.Get(key).Should().BeEquivalentTo(value);
}
public void IfCacheDurationIsOrBelow0_DontInvoleCache(int expPeriod)
{
ICache cache = new InMemoryCache();
var obj1 = new object();
var obj2 = new object();
var key = GenerateUniqueCacheKey();
cache.Get(key, TimeSpan.FromTicks(1000000), () => obj1);
// Act
var cacheItem = cache.Get(key, TimeSpan.FromTicks(expPeriod), () => obj2);
// Assert
Assert.Equal(obj2, cacheItem);
}
public void CanNotGetItemAfterExpiration()
{
TimedEventMock timedEventMock = null;
SystemClockMock clock = new SystemClockMock();
TimerFactoryMock timerFactory = new TimerFactoryMock(
timedEventMockFactory: (interval, runOnce, action) => {
TimedEventMock result = new TimedEventMock(interval, runOnce, action);
timedEventMock = result;
return(result);
},
timerMockFactory: null
);
const string key = "test_key";
const string value = "test_value";
clock.UtcNow = DateTime.Now;
TimeSpan expiration = TimeSpan.FromHours(1);
using (InMemoryCache <string> cache = new InMemoryCache <string>(clock, timerFactory)) {
cache.Set(key, value, expiration);
clock.UtcNow += expiration + TimeSpan.FromSeconds(5);
timedEventMock.Tick();
Assert.IsFalse(cache.HasItemWithKey(key), $"Cache contains entry with key '{key}'.");
Assert.ThrowsException <KeyNotFoundException>(() => cache.Get(key));
}
}
public void CanSetMultipleItems()
{
SystemClockMock clock = new SystemClockMock();
TimerFactoryMock timerFactory = new TimerFactoryMock(
timedEventMockFactory: (x, y, z) => new EmptyDisposable(),
timerMockFactory: null
);
Dictionary <string, string> values = new Dictionary <string, string>()
{
["key1"] = "value1",
["key2"] = "value2"
};
using (InMemoryCache <string> cache = new InMemoryCache <string>(clock, timerFactory)) {
foreach (var item in values)
{
cache.Set(item.Key, item.Value, TimeSpan.FromTicks(1));
}
foreach (var item in values)
{
Assert.IsTrue(cache.HasItemWithKey(item.Key), $"Cache does not contain entry with key '{item.Key}'.");
Assert.AreEqual(item.Value, cache.Get(item.Key));
}
}
}
public void CanGetItemBeforeExpiration()
{
TimedEventMock timedEventMock = null;
SystemClockMock clock = new SystemClockMock();
TimerFactoryMock timerFactory = new TimerFactoryMock(
timedEventMockFactory: (interval, runOnce, action) => {
TimedEventMock result = new TimedEventMock(interval, runOnce, action);
timedEventMock = result;
return(result);
},
timerMockFactory: null
);
const string key = "test_key";
const string value = "test_value";
clock.UtcNow = DateTime.Now;
TimeSpan expiration = TimeSpan.FromHours(1);
using (InMemoryCache <string> cache = new InMemoryCache <string>(clock, timerFactory)) {
cache.Set(key, value, expiration);
clock.UtcNow += expiration - TimeSpan.FromMinutes(30);
timedEventMock.Tick();
Assert.IsTrue(cache.HasItemWithKey(key), $"Cache does not contain entry with key '{key}'.");
string actual = cache.Get(key);
Assert.AreEqual(value, actual);
}
}
public void Cache_returns_old_stored_item()
{
// Arrange
ICache cache = new InMemoryCache();
var returnObj1 = new object();
var returnObj2 = new object();
var key = GenerateUniqueCacheKey();
cache.Get(key, TimeSpan.FromSeconds(1000), () => returnObj1);
// Act
var cacheItem = cache.Get(key, TimeSpan.FromTicks(100), () => returnObj2);
// Assert
Assert.Equal(returnObj1, cacheItem);
}
public Quote[] GetQuotes(string assetPairId)
{
OrderBook orderBook = _cache.Get(assetPairId);
if (orderBook == null)
{
return(null);
}
LimitOrder[] sellLimitOrders = orderBook.LimitOrders
.Where(o => o.Type == LimitOrderType.Sell)
.OrderBy(o => o.Price)
.ToArray();
LimitOrder[] buyLimitOrders = orderBook.LimitOrders
.Where(o => o.Type == LimitOrderType.Buy)
.OrderByDescending(o => o.Price)
.ToArray();
if (sellLimitOrders.Length == 0 || buyLimitOrders.Length == 0)
{
return(null);
}
decimal secondAsk = sellLimitOrders[sellLimitOrders.Length - 1].Price;
decimal secondBid = buyLimitOrders[buyLimitOrders.Length - 1].Price;
return(new[]
{
CreateQuote(orderBook, sellLimitOrders[0].Price, buyLimitOrders[0].Price),
CreateQuote(orderBook, secondAsk, secondBid)
});
}
public static dynamic GetProductSchema(string productName)
{
var cacheProvider = new InMemoryCache();
string cacheKey = string.Format("productSchema-{0}", productName);
return(cacheProvider.Get <dynamic>(cacheKey, PopulateProductSchema, productName));
}
public async Task <HedgeSettings> GetAsync()
{
HedgeSettings hedgeSettings = _cache.Get(CacheKey);
if (hedgeSettings == null)
{
hedgeSettings = await _hedgeSettingsRepository.GetAsync();
if (hedgeSettings == null)
{
hedgeSettings = new HedgeSettings
{
MarketOrderMarkup = .02m,
ThresholdDown = 1000,
ThresholdUp = 5000,
ThresholdDownBuy = 1000,
ThresholdDownSell = 1000,
ThresholdUpBuy = 5000,
ThresholdUpSell = 5000,
ThresholdCritical = 10000
};
}
_cache.Initialize(new[] { hedgeSettings });
bool isDirty = false;
if (hedgeSettings.ThresholdDownBuy == default(decimal))
{
hedgeSettings.ThresholdDownBuy = hedgeSettings.ThresholdDown;
isDirty = true;
}
if (hedgeSettings.ThresholdDownSell == default(decimal))
{
hedgeSettings.ThresholdDownSell = hedgeSettings.ThresholdDown;
isDirty = true;
}
if (hedgeSettings.ThresholdUpBuy == default(decimal))
{
hedgeSettings.ThresholdUpBuy = hedgeSettings.ThresholdUp;
isDirty = true;
}
if (hedgeSettings.ThresholdUpSell == default(decimal))
{
hedgeSettings.ThresholdUpSell = hedgeSettings.ThresholdUp;
isDirty = true;
}
if (isDirty)
{
await UpdateAsync(hedgeSettings);
}
}
return(hedgeSettings);
}
public void InMemoryCacheTest()
{
ICache cache = new InMemoryCache(new MemoryCache(new MemoryCacheOptions()));
cache.Set("city", "nanjing", TimeSpan.FromSeconds(5));
Thread.Sleep(5000);
Console.WriteLine(cache.Get("city"));
}
public void TestInMemoryCacheStruct()
{
var cache = new InMemoryCache("cache1", new TimeSpan(0, 2, 0));
int hits = 0;
Func <int> getter = () => { hits++; return(hits); };
int result;
result = cache.Get("key", getter);
Assert.AreEqual(1, hits);
Assert.AreEqual(1, result);
result = cache.Get("key", getter);
Assert.AreEqual(1, hits);
Assert.AreEqual(1, result);
}
public void TestInMemoryCacheNull()
{
var cache = new InMemoryCache("cache1", new TimeSpan(0, 2, 0));
int misses = 0;
Func <string> getter = () => { misses++; return(null); };
string result;
result = cache.Get("key", getter);
Assert.AreEqual(1, misses);
Assert.AreEqual(null, result);
result = cache.Get("key", getter);
Assert.AreEqual(1, misses);
Assert.AreEqual(null, result);
}
public void TestInMemoryCacheObject()
{
var cache = new InMemoryCache("cache1", new TimeSpan(0, 2, 0));
int hits = 0;
Func <string> getter = () => { hits++; return(hits.ToString()); };
string result;
result = cache.Get("key", getter);
Assert.AreEqual(1, hits);
Assert.AreEqual("1", result);
result = cache.Get("key", getter);
Assert.AreEqual(1, hits);
Assert.AreEqual("1", result);
}
public void TestInMemoryCacheGetTwice()
{
var cache = new InMemoryCache("cache1", new InMemoryPolicy());
cache.ClearAll();
int misses = 0;
Func <string> getter = () => { misses++; return(misses.ToString()); };
string result;
result = cache.Get("key", getter);
Assert.AreEqual("1", result);
result = cache.Get("key", getter);
Assert.AreEqual("1", result);
}
public void InMemoryCacheObjectReturnsPayload()
{
const string VALUE = "myvalue";
ICache cache = new InMemoryCache(600);
cache.Set("mykey", VALUE);
Assert.Equal(VALUE, cache.Get <string>("mykey"));
}
public void InMemoryCacheObjectReturnsNullWhenCacheObjectExpires()
{
const string VALUE = "myvalue";
ICache cache = new InMemoryCache(0);
cache.Set("mykey", VALUE);
Assert.Equal(null, cache.Get <string>("mykey"));
}
public void TestInMemoryCacheObjectMutated()
{
var cache = new InMemoryCache("cache1", new TimeSpan(0, 2, 0));
List <string> value = new List <string> {
"1"
};
Func <IEnumerable <object> > getter = () => { return(value); };
IEnumerable <object> result;
result = cache.Get("key", getter);
CollectionAssert.AreEqual(new object[] { "1" }, result.ToArray());
value.Add("2");
result = cache.Get("key", getter);
CollectionAssert.AreEqual(new object[] { "1", "2" }, result.ToArray());
}
public void AddGetRemove_Success()
{
// Arrange
Customer customer = TestData.CreateCustomer();
ICache cache = new InMemoryCache();
// Add, Get and Assert
cache.Add(customer.Id.ToString(), customer);
object customerObject = cache.Get(customer.Id.ToString());
// Assert
Assert.IsNotNull(customerObject);
Assert.IsInstanceOfType(customerObject, typeof(Customer));
// Remove and Assert
cache.Remove(customer.Id.ToString());
customerObject = cache.Get(customer.Id.ToString());
Assert.IsNull(customerObject);
}
public void TestInMemoryCacheTimeToLive_Constant()
{
var ttl = 3;
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 InMemoryCache(
"constant-expire",
new InMemoryPolicy
{
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);
// 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);
}
static Symbol()
{
try
{
Cache = new InMemoryCache <Symbol>();
Cache.Set(
new[] {
// <<insert symbol definitions>>
});
// Redirect (BCH) Bitcoin Cash (BCC = BitConnect)
Cache.Set("BCH_USDT", Cache.Get("BCC_USDT"));
Cache.Set("BCH_BNB", Cache.Get("BCC_BNB"));
Cache.Set("BCH_BTC", Cache.Get("BCC_BTC"));
Cache.Set("BCH_ETH", Cache.Get("BCC_ETH"));
}
catch (Exception e)
{
Console.Error?.WriteLine($"{nameof(Binance)}.{nameof(Symbol)}(): \"{e.Message}\"");
}
}
public WheelEntity Get(WheelFilter filter)
{
var wheel = _inMemoryCache.Get(filter.ManufacturerName);
if (wheel == null)
{
wheel = _repository.Get(filter);
_inMemoryCache.Put(filter.ManufacturerName, wheel);
}
return(wheel);
}
public CarEngineEntity Get(EngineFilter filter)
{
var engine = _inMemoryCache.Get(filter.ManufacturerName);
if (engine == null)
{
engine = _repository.Get(filter);
_inMemoryCache.Put(filter.ManufacturerName, engine);
}
return(engine);
}
public TyreEntity Get(TyreFilter filter)
{
var tyre = _inMemoryCache.Get(filter.WheelManufacturerName);
if (tyre == null)
{
tyre = _repository.Get(filter);
_inMemoryCache.Put(filter.WheelManufacturerName, tyre);
}
return(tyre);
}
public void Cache_returns_populated_item()
{
// Arrange
ICache cache = new InMemoryCache();
var returnObj = new object();
var key = GenerateUniqueCacheKey();
// Act
var cacheItem = cache.Get(key, TimeSpan.FromSeconds(1), () => returnObj);
// Assert
Assert.Equal(returnObj, cacheItem);
}
public CarPaintEntity Get(PaintFilter filter)
{
var paint = _inMemoryCache.Get(filter.Name);
if (paint == null)
{
paint = _repository.Get(filter);
_inMemoryCache.Put(filter.Name, paint);
}
return(paint);
}
