#Duplicate detector widows code#

testqueue3(Enable Batched Operation, Requires Duplicate Detection, Requires Session, Enable Partition): Add new message twice the message count turn to 20.

testqueue2(Enable Batched Operation, Requires Duplicate Detection, Requires Session): send 10 messages first, and send another same 10 messages, here also display 10 messages.

testqueue (Enable Batched Operation, Requires Duplicate Detection): send 10 messages first, then immediately send another same 10 messages, it still displays 10 messages.

To find the message, I sent 10 message each time first. SendClient.SendBatch(Enumerable.Range(0, 10).Select(n =>Ĭonsole.WriteLine('test my message n QueueClient sendClient = QueueClient.CreateFromConnectionString(connectionString, queueName) Static string queueName = 'testqueue3' // testqueue,testqueue2 Otherwise Service Bus returns an invalid operation exception. From the above document, when enable both Partition key and Session ID, the value of them need to be same. The Session ID here set with a random value. The different in this program used in each time, just the BrokeredMessage SessionID and PartitionKey that in red color.

testqueue3 : Enable Batched Operation, Requires Duplicate Detection, Requires Session, Enable Partition.

testqueue2 : Enable Batched Operation, Requires Duplicate Detection, Requires Session.

testqueue : Enable Batched Operation, Requires Duplicate Detection.

At first time all of them have 0 messages. There are three queue I used, testqueue, testqueue2, testqueue3. Is that a correct statement? Let’s do a test! This means the duplicate detection only can work when SessionID or PartitionKey are not be set. “If the queue or topic has the RequiresDuplicateDetection property set to true and the SessionId or PartitionKey properties are not set, then the MessageId property value serves as the partition key” But what’s the relationship between them?įrom the meaning of Duplication detection, we know that there is a MessageId of each message.

So, from these above knowledges, we know that Azure Service Bus Queue and Topic/Subscription can enable for Duplicate Detection, Partitions and Sessions. Any sender can create a session when submitting messages into a topic or queue by setting the SessionId property to some application-defined identifier that is unique to the session. There are two patterns of it, FIFO and request-response pattern. Microsoft Service Bus Session enable joint and ordered handling of unbounded sequences of messages.Partition key can be used in some scenarios, such as sessions or transactions, require messages to be stored in a specific partition. Enable partitioning the overall throughput will separate to different partition. Service Bus Partitions enable queues and topics or message entities to be partitioned across multiple message brokers and messaging stores.Enabling Duplicate detection helps to ensure that a duplicate message, which has the same message Id cannot be sent into a messaging entity during a specified time.Compare and synchronize photo folders or libraries.Before we start, please read these document about Duplicate Detection, Partitioned queues and topics and Message Sessionsįrom the above Pre-requirements, we learn the followings.Search for similar images based on a sample or multiple sample photos.Identify duplicate images regardless of the image format.Key Features for Finding Repeating Photos: That is why a photo duplicate finder is a much more sophisticated and advanced tool.

#Duplicate detector widows code#

On the contrary a dedicated duplicate image finder tool has to include code for decoding every image format. They do that because it is simpler and does not require additional effort.

This is the reason why a standard duplicate file finder can not identify duplicate images even if they are absolutely identical and stored in different file formats - because they compare the file data instead of decoding that data and comparing the actual photo that it represents. That is why the same image stored in different file formats has totally different data representation on the storage. The different file formats have different way of compression and different way of storing those pixels. As the quantity of those pixels is large they are usually compressed when stored in a file and decompressed when they have to be displayed. The count of the horizontal and vertical pixels determines the resolution of the picture.

In order to understand how it work you should know how a digital photo is stored.Ī digital photo is represented by dots with different colors named pixels. Photo duplicate cleaner is a dedicated tool for finding duplicate images.