Azure Cosmos DB–Multi Master

During the Ignite 2018, Microsoft has announced the general availability of Multi-Master feature being introduced to Azure Cosmos DB to provide more control into data redundancy and elastic scalability for your data from different regions with multiple writes and read instances. What is Multi-Master essentially? Multi-master is a capability that provided as part of Cosmos…

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Azure Cosmos DB – 429 Too Many Requests

Recently while I was doing Performance Testing in one of the APIs interacting with Cosmos DB, I encountered a problem as Azure Cosmos DB API’s started returning Http Code 429.  Http Status Code 429 indicates that too many request been received or request rate is very large. This error would happen when we have concurrent…

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Azure Cosmos DB – Consistency Levels

CosmosDB is a planet scale multi model, multi-region NoSQL database service provided as part of Azure Platform. Azure Cosmos DB is designed to provide global distribution for every data model you choose while creating Cosmos DB.  It is promised to provide low latency and various well-defined consistency models to ensure data redundancy and high availability….

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Azure Functions App–Run OnDemand Serverless code – a path way to Serverless Computing

Azure Functions is a new cloud solution from Azure that would let you execute small pieces code or “functions” in the cloud.  This means you do not have to worry about the infrastructure or environment to execute your little piece of code to solve any of your business problems. Functions can make development even more…

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Microsoft Azure IoT Suite–Provisioned solutions for Faster Time to Market IoT enabled solutions

Microsoft Azure IoT Suite Provisioned solutions will help you create your own fully integrated solutions tailored for your specific needs in the following 3 sections. Using these ready to consume solutions will accelerate your time to market IoT(Internet of Things) requirements. Remote Monitoring  – Connect and monitor your devices to analyze untapped data and improve…

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IoT Protocols–Quick Comparison

The table below contains a quick summary of the IoT protocols: Protocol CoAP XMPP RESTful HTTP MQTT AMQP Transport UDP TCP TCP TCP TCP Messaging Request/Response Publish/Subscribe Request/Response Request/Response Publish/Subscribe Request/Response Topic based Publish/Subscribe 2G, 3G, 4G Suitability (1000s nodes) Excellent Excellent Excellent Excellent Excellent LLN Suitability (1000s nodes) Excellent Fair Fair Fair Excellent Compute…

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