Cloud, mist edge computation and calculation
Brief definition and distinction of various calculations.
1. Cloud computing (Cloud Computing)
Cloud computing is based on the increase in the use and interaction patterns of Internet-related services, usually involving the Internet to provide dynamic and easy scalable and often virtualized resources. Cloud is a network, an Internet abstract statement.
- Cloud computing system by the cloud platform , cloud storage , cloud terminal , cloud security four basic components;
- From the user point cloud platform can be divided into public cloud , private cloud , hybrid cloud ;
- Feature
- VLSI: Cloud computing gives users the unprecedented ability;
- Virtualization
- High reliability
- CURRENCY
- High Scalability
- On-demand service: pay-as electric as water;
- Very cheap
- There is a potential safety hazard: the privacy of users, data providers, data privacy, etc.
- Shortcoming
- Privacy security risk
- Network latency
- As a complement cloud computing: Fog edge computing and computing have been proposed to compensate for the problems people cloud computing
2. Fog calculated (Fog Computing)
Guming Si Yee, compared to cloud computing cloud this one away from the concept of ground fog calculation fog just as the fog of life, it produces in people around, very appropriate interpretation of the fog close to the user's computing features.
Fog calculated originally proposed by Columbia University Prof. Stolfo to block hackers, carried forward by the United States after the Cisco terms, the formation of fog we are discussing today *** *** computing;
- Fog computing can be seen as the cloud computing localization, that is closer to the user level. Cloud computing is to send large amounts of data to the cloud end the use of cloud computing power and storage capacity to serve users, in order to solve a single user device storage capacity and insufficient computational speed problem; now we'll Terminal Equipment and Data Center adding a layer between, referred to edge of the network layer . As shown below:
Edge of the network layer of the router or the like with a small memory server composition of the cloud of data into some unwanted this layer directly into the process, which can reduce the pressure on the "cloud", improve efficiency, reduce latency, which a working principle can be understood as: fog calculation .
- Further, the fog is calculated can also be understood as distributed cloud , the data are uploaded for analysis, storage and processing; because it is distributed, i.e. "fog" from a number of layers of fog nodes, this can allow processing speed faster and more efficient;
- Cloud computing research emphasis is the way the fog is calculated to emphasize the position calculation;
- Feature
- Low latency
- High reliability
- Location awareness
- More energy efficient
3. Calculation edge
An edge calculating means or the side close to the source of data, a network, computing, storage capacity of one core application open platform nearest the nearest end to provide services. Their applications at the edge initiated, resulting in faster service response network, to meet the basic needs of the industry in terms of real-time business intelligence applications, security and protection of privacy. Calculating an edge is connected between the physical entities and industrial, or at the top of the physical entity. And cloud computing, you can still access historical data edge computing.
- For edge computing device may be a mobile device such as a smart phone, PC, smart home and other household terminal, it may be ATM, cameras terminals. Edge computing purpose can: make the calculation time occurs in the side.
- Feature
- Distributed, low latency
- Data terminal equipment screening, make full use of the free resources of the device, and analysis filtering at the edge node, saving time and energy;
- Today massive data generated edge computation can be significantly reduced traffic data from the device to the cloud
- Intelligent : For the future of things, AR, VR and other scenes as well as big data and artificial intelligence industry, in fact there is a strong demand for near-field computing, edge computing computing needs in the protection of large areas from the terminal close complete the calculation, the completion of the service demanding low-latency response.
4. VS fog cloud computing
- Cloud computing has more computing power and storage capacity;
- Drive massive data access time, there is a higher delay, as compared to cloud, mist distributed computing features so that he has a lower latency, reduce the communication load of the cloud;
- Fog node has a location-aware capability, etc., it can be widely used LBS (Location Based Services) service, car networking environment to reduce the communication delay;
- Fog computing and cloud computing complement mist filter can be calculated, such as polymeric user message (e.g., sensor stop message sent), only the necessary message to the cloud, reducing the pressure of the core network
The fog is calculated edge computation VS
Before the fog always thought edge computing and computing is one thing to children, read some information and found that there are still a Diudiu difference.
Computing concept edge fog occurs earlier in time than the calculation means and the boundary behalf of the cloud devices, as compared to calculated in terms of the fog cloud computing device closer to the end, so called "fog."
Look at things from the difference between the two levels:
- Fog calculated : often mentioned in the context IOT, the main business is a typical router, the access point is calculated together with the even sensor and actuator devices.
- Processing capability in which the device includes a LAN IOT, IOT gateways within the network, node or fog for data collection, processing, storage. Information collected from multiple sources to the gateway, the data processing device to send the data back to the need.
- Fog calculation processing capability is characterized by a stronger single device (mist node) receives data from a plurality of endpoints, the data after processing back to the source endpoint, and a lower delay compared to the cloud;
- Fog does not require precise calculation processing capability or absence of division, some limited processing may be executed according to the capability of the apparatus, but more complex processing of the embodiment, if desired, a positive connection.
- Edge computing : to further promote the concept of "processing capabilities within the LAN" fog of computing, processing power closer to the data source. After finishing treatment is not implemented in the central server, but rather the implementation process of each device within the network.
- Compared with fog calculation, calculation dictates the nature of the edge, a single point of failure less. Each device operates independently, you can determine what data is stored locally, what data transmitted to the core network.
- Summary : edge computation than fog calculated more localized way, are not the same application scenario.
- For example, in chemical plants, chemical raw materials need to have a sensor detecting the concentration time and the like, if the information is also collected to be transmitted to the node even fog cloud, so the resulting network delays may cause an accident, so the an edge network node of chemical sensors self-operation, manual intervention is required to judge whether or alarm processing, when the edge is calculated;
- In the vehicle network environment, the need for real-time vehicle location service request, because the vehicle itself does not have the function of self-service location, you can only request data through the fog to the cloud network, so in this case is the mist computing scenarios.
6. Summary
Whether using a cloud, fog computing, edge computing or otherwise, are intended to make our lives more convenient.
