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SUMMARY
Cloud computing is being increasingly adopted by individuals, organizations, and governments. However, as the computations that are offloaded to the cloud expand to societal-critical services, the dependability requirements of cloud services become much higher, and we need to ensure that the infrastructure that supports these services is ready to meet these requirements.
The DependableCloud project seeks to tackle the challenges that arise from two distinctive characteristic of the cloud infrastructure. The first is that non-crash faults, despite being considered highly unlikely by the designers of traditional computing systems, become commonplace when those systems are scaled up into the more complex cloud infrastructure. The second issue issue is that, in order to meet their scalability and reliability requirements, cloud services replicate state across multiple sites, and direct users to the lowest latency one so that not all operations can be executed optimally. The project aims to provide solutions to these problems by developing new systemic models.
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SOLUTIONS
- Solving dependability issues that arise when cloud infrastructures become higher scaled, more complex, and more societal-critical
- Defining a new fault model, and constructing a series of building blocks and key protocol elements that enable the construction of fault-tolerant cloud services.
- Developing a novel consistency model that allows for developing highly scalable services that are fast when possible and consistent when necessary, and a labeling methodology to guide the programmer in deciding which operations can run at each consistency level.
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