public async Task SimpleReadThroughCache()
{
var path = System.IO.Path.GetTempFileName();
var conn = new SQLite.SQLiteAsyncConnection(path);
var db = new TestDatabase(conn);
await db.Reset();
var sqliteThingCache = new SqliteClassCache <Parent, long>(db);
await sqliteThingCache.Setup();
var cache1 = new ModelCache(aClassCache: new Dictionary <Type, IModelClassCache>()
{
{ typeof(Parent), sqliteThingCache }
});
// read from origin
var cascade = new CascadeDataLayer(origin, new ICascadeCache[] { cache1 }, new CascadeConfig()
{
DefaultFreshnessSeconds = 1
});
var thing1 = await cascade.Get <Parent>(5);
Assert.AreEqual(5, thing1 !.id);
Assert.AreEqual(cascade.NowMs, thing1.updatedAtMs);
origin.IncNowMs();
var thing2 = await cascade.Get <Parent>(5, freshnessSeconds : 2);
Assert.AreEqual(thing1.updatedAtMs, thing2 !.updatedAtMs);
var thing3 = await cascade.Get <Parent>(5, freshnessSeconds : 0);
Assert.AreEqual(origin.NowMs, thing3 !.updatedAtMs);
}
public async Task ReadWithoutCache()
{
var cascade = new CascadeDataLayer(origin, new ICascadeCache[] {}, new CascadeConfig());
var thing = await cascade.Get <Parent>(5);
Assert.AreEqual(5, thing !.id);
}
public async Task ReadWithModelCachesMultitest()
{
var thingModelStore1 = new ModelClassCache <Parent, long>();
var cache1 = new ModelCache(aClassCache: new Dictionary <Type, IModelClassCache>()
{
{ typeof(Parent), thingModelStore1 }
});
var thingModelStore2 = new ModelClassCache <Parent, long>();
var cache2 = new ModelCache(aClassCache: new Dictionary <Type, IModelClassCache>()
{
{ typeof(Parent), thingModelStore2 }
});
// read from origin
var cascade = new CascadeDataLayer(origin, new ICascadeCache[] { cache1, cache2 }, new CascadeConfig()
{
DefaultFreshnessSeconds = 1
});
var thing1 = await cascade.Get <Parent>(5);
Assert.AreEqual(5, thing1 !.id);
Assert.AreEqual(cascade.NowMs, thing1.updatedAtMs);
// should also be in both caches
var store1ThingResponse = await thingModelStore1.Fetch(RequestOp.GetOp <Parent>(5, cascade.NowMs));
Assert.AreEqual((store1ThingResponse.Result as Parent) !.id, 5);
Assert.AreEqual(cascade.NowMs, (store1ThingResponse.Result as Parent) !.updatedAtMs);
var store2ThingResponse = await thingModelStore2.Fetch(RequestOp.GetOp <Parent>(5, cascade.NowMs));
Assert.AreEqual((store2ThingResponse.Result as Parent) !.id, 5);
Assert.AreEqual(cascade.NowMs, (store2ThingResponse.Result as Parent) !.updatedAtMs);
origin.IncNowMs();
// freshness=5 allows for cached version
var thing2 = (await cascade.Get <Parent>(5, freshnessSeconds: 5)) !;
Assert.AreEqual(thing1.updatedAtMs, thing2.updatedAtMs);
// freshness=0 doesn't allow for cached version
var thing3 = (await cascade.Get <Parent>(5, freshnessSeconds: 0)) !;
Assert.AreEqual(origin.NowMs, thing3.updatedAtMs);
// caches should also be updated
store1ThingResponse = await thingModelStore1.Fetch(RequestOp.GetOp <Parent>(5, cascade.NowMs));
Assert.AreEqual(origin.NowMs, (store1ThingResponse.Result as Parent) !.updatedAtMs);
store2ThingResponse = await thingModelStore2.Fetch(RequestOp.GetOp <Parent>(5, cascade.NowMs));
Assert.AreEqual(origin.NowMs, (store2ThingResponse.Result as Parent) !.updatedAtMs);
origin.IncNowMs(2000);
// freshness=2 should allow for cached version
var thing4 = (await cascade.Get <Parent>(5, freshnessSeconds: 2)) !;
Assert.AreEqual(thing3.updatedAtMs, thing4.updatedAtMs);
// freshness=1 should get fresh version
var thing5 = (await cascade.Get <Parent>(5, freshnessSeconds: 1)) !;
Assert.AreEqual(origin.NowMs, thing5.updatedAtMs);
origin.IncNowMs(1000);
// clear cache1, freshnessSeconds=1 should return value from cache2 and update cache1
await cache1.Clear();
var thing6 = (await cascade.Get <Parent>(thing4.id, freshnessSeconds: 1)) !; // should get cache2 version
Assert.AreEqual(thing6.updatedAtMs, thing5.updatedAtMs);
store1ThingResponse = await thingModelStore1.Fetch(RequestOp.GetOp <Parent>(5, cascade.NowMs));
Assert.AreEqual(thing6.updatedAtMs, (store1ThingResponse.Result as Parent) !.updatedAtMs);
}