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Connecting Two HC-05 Bluetooth Together Using Arduino

Hey friends I am going to connect two Arduino bluetooths(HC-05) together. We don’t need much just an Arduino, two Bluetooths, and a set of wires. Given below is the schematic. The code for the Arduino is as follows: After uploading the code follow the next steps: For the Slave Bluetooth Module: Disconnect module. While pressing …

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Moving to communication of events between subsystems — CQRS-ES with open source…

Before going into definitions of EP, CEP, and QSQS let us start with some basic database term and what problem we are trying to address here. We have commercial databases and database professionals those who publicized CRUD operations a lot. It is one-row-per-pattern works well in most of the projects and enough to build an …

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Cloud Databases & Cloud Blob…

Cloud computing is the next stage in evolution of the Internet. The cloud in cloud computing provides the means through which everything — from computing power to computing infrastructure, applications, business processes to personal collaboration — can be delivered to you as a service wherever and whenever you need. Cloud databases are web-based services, designed …

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Hive Naming conventions and database naming…

Short Description: Naming conventions help to ease programmer and architect to understand whats inside going on in a business. Article I have worked with almost 20 to 25 applications. Whenever i start working first i have to understand each applications naming convention and i keep thinking why we all not follow single naming convention. As …

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The ACID properties and the CAP theorem are two concepts in data management to distributed system.

Started working on HBase again!! Thought why not refresh few concepts before proceeding to actual work. Important things comes into mind when we work with NoSQL is distributed environment are sharding and partitions.  Let’s dive into ACID properties of database and CAP theorem for distributed system. The ACID properties and the CAP theorem are two …

The ACID properties and the CAP theorem are two concepts in data management to distributed system. Read More »