// API
public async Task AddAsync <TYPE>(string key, TYPE data)
{
// save new version shared and locally
byte[] cacheData = new GeneralFormatter().Serialize(data);
SharedCacheObject sharedCacheObj = new SharedCacheObject {
Created = DateTime.UtcNow,
Key = key,
Value = cacheData,
};
await DataProvider.RemoveAsync(key);
await DataProvider.AddAsync(sharedCacheObj); // save shared cached version
LocalSharedCacheObject localCacheObj = new LocalSharedCacheObject {
Created = sharedCacheObj.Created,
Key = sharedCacheObj.Key,
Value = sharedCacheObj.Value,
};
using (ICacheDataProvider localCacheDP = YetaWF.Core.IO.Caching.GetLocalCacheProvider()) {
await localCacheDP.AddAsync(key, localCacheObj); // save locally cached version
}
}
// API
public async Task AddAsync <TYPE>(string key, TYPE data)
{
key = KeyPrefix + key;
// save new version shared and locally
byte[] cacheData = new GeneralFormatter().Serialize(data);
DateTime created = DateTime.UtcNow;
IDatabase db = Redis.GetDatabase();
if (YetaWFManager.IsSync())
{
db.KeyDelete(GetVersionKey(key));
db.KeyDelete(GetDataKey(key));
db.StringSet(GetVersionKey(key), created.Ticks);
db.StringSet(GetDataKey(key), cacheData);
}
else
{
await db.KeyDeleteAsync(GetVersionKey(key));
await db.KeyDeleteAsync(GetDataKey(key));
await db.StringSetAsync(GetVersionKey(key), created.Ticks);
await db.StringSetAsync(GetDataKey(key), cacheData);
}
LocalSharedCacheObject localCacheObj = new LocalSharedCacheObject {
Created = created,
Key = key,
Value = cacheData,
};
using (ICacheDataProvider localCacheDP = YetaWF.Core.IO.Caching.GetLocalCacheProvider()) {
await localCacheDP.AddAsync(key, localCacheObj); // save locally cached version
}
}
public async Task <GetObjectInfo <TYPE> > GetAsync <TYPE>(string key)
{
key = KeyPrefix + key;
// get locally cached version
GetObjectInfo <LocalSharedCacheObject> localInfo;
using (ICacheDataProvider localCacheDP = YetaWF.Core.IO.Caching.GetLocalCacheProvider()) {
localInfo = await localCacheDP.GetAsync <LocalSharedCacheObject>(key);
if (!localInfo.Success)
{
// no locally cached data
localInfo = new GetObjectInfo <LocalSharedCacheObject> {
Data = new LocalSharedCacheObject {
Created = DateTime.MinValue,
Key = key,
Value = null,
},
Success = false,
};
}
// get shared cached version
IDatabase db = Redis.GetDatabase();
long? val;
if (YetaWFManager.IsSync())
{
val = (long?)db.StringGet(GetVersionKey(key));
}
else
{
val = (long?)await db.StringGetAsync(GetVersionKey(key));
}
if (val != null)
{
DateTime sharedCacheCreated = new DateTime((long)val);
if (sharedCacheCreated != localInfo.Data.Created)
{
// shared cached version is different, retrieve and save locally
byte[] sharedCacheData;
if (YetaWFManager.IsSync())
{
sharedCacheData = db.StringGet(GetDataKey(key));
}
else
{
sharedCacheData = await db.StringGetAsync(GetDataKey(key));
}
if (sharedCacheData == null) // this shouldn't happen, we just got the shared version
// return the local data instead
{
}
else
{
LocalSharedCacheObject localCacheObj = new LocalSharedCacheObject {
Created = sharedCacheCreated,
Key = key,
Value = sharedCacheData,
};
await localCacheDP.AddAsync(key, localCacheObj); // save as locally cached version
return(new GetObjectInfo <TYPE> {
Success = true,
Data = new GeneralFormatter().Deserialize <TYPE>(sharedCacheData),
});
}
}
else
{
// shared version same as local version
}
}
else
{
// there is no shared version
}
// return the local data
if (localInfo.Success)
{
return(new GetObjectInfo <TYPE> {
Success = true,
Data = new GeneralFormatter().Deserialize <TYPE>(localInfo.Data.Value),
});
}
else
{
return(new GetObjectInfo <TYPE> {
Success = false,
});
}
}
}
public async Task <GetObjectInfo <TYPE> > GetAsync <TYPE>(string key)
{
// get locally cached version
GetObjectInfo <LocalSharedCacheObject> localInfo;
using (ICacheDataProvider localCacheDP = YetaWF.Core.IO.Caching.GetLocalCacheProvider()) {
localInfo = await localCacheDP.GetAsync <LocalSharedCacheObject>(key);
if (!localInfo.Success)
{
// no locally cached data
localInfo = new GetObjectInfo <LocalSharedCacheObject> {
Data = new LocalSharedCacheObject {
Created = DateTime.MinValue,
Key = key,
Value = null,
},
Success = false,
};
}
// get shared cached version
SharedCacheVersion sharedInfo = await SharedCacheVersionPostgreSQLDataProvider.SharedCacheVersionDP.GetVersionAsync(key);
if (sharedInfo != null)
{
if (sharedInfo.Created != localInfo.Data.Created)
{
// shared cached version is different, retrieve and save locally
SharedCacheObject sharedCacheObj = await DataProvider.GetAsync(key);
if (sharedCacheObj == null) // this shouldn't happen, we just got the shared version
// return the local data instead
{
}
else
{
LocalSharedCacheObject localCacheObj = new LocalSharedCacheObject {
Created = sharedCacheObj.Created,
Key = sharedCacheObj.Key,
Value = sharedCacheObj.Value,
};
await localCacheDP.AddAsync(key, localCacheObj); // save as locally cached version
return(new GetObjectInfo <TYPE> {
Success = true,
Data = new GeneralFormatter().Deserialize <TYPE>(sharedCacheObj.Value),
});
}
}
else
{
// shared version same as local version
}
}
else
{
// there is no shared version
}
// return the local data
if (localInfo.Success)
{
return(new GetObjectInfo <TYPE> {
Success = true,
Data = new GeneralFormatter().Deserialize <TYPE>(localInfo.Data.Value),
});
}
else
{
return(new GetObjectInfo <TYPE> {
Success = false,
});
}
}
}