RESTful API and ASP.NET
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The document discusses REST (REpresentational State Transfer) APIs and how to build a simple RESTful API using ASP.NET Web API. Some key points covered include: - The five principles of REST including giving every resource an ID and linking resources together. - HTTP methods like GET, POST, PUT, and DELETE should be used to perform CRUD operations on resources. - ASP.NET Web API is well suited for building HTTP services that return data in formats like JSON and XML, while ASP.NET MVC is better for full web applications that return both views and data. - Web API uses different parameter bindings - queries from the URL, bodies from request payloads. Routing maps HTTP
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Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
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- 3. The five key principles are: • Give every “thing” an ID • Link things together • Use standard methods • Resources with multiple representations • Communicate statelessly
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- 5. Without REST
- 6. With REST
- 7. Build simple RESTful API • /getAllMembers • /getAllCertificatedMembers • /getMember/1 • /newMember • /saveMember It’s not OK
- 8. It’s OK • POST /Members — Creation of a new member • GET /Members — A list of all members in the system • PUT /Members — An update to the all members • DELETE /Members — Delete all members • POST /Members/12345 — Return error (member 12345 are created) • GET /Members/12345 — Show member with ID 12345 • PUT /Members/12345 — Edit member with ID12345 • DELETE /Members/12345 — Delete
- 9. Hide the difficult method of the mark “?” • GET /members?age=20&city=VN&location=park • POST /members?age=25&city=VN
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