Role-Based Access Control (RBAC) is the most widely used model for advanced access
control deployed in diverse enterprises of all sizes. RBAC critically depends on defining …

In a distributed storage system, code symbols are dispersed across space in nodes or
storage units as opposed to time. In settings such as that of a large data center, an important …

Serverless computing is becoming increasingly popular, enabling users to quickly launch
thousands of shortlived tasks in the cloud with high elasticity and fine-grain billing. These …

Codes are widely used in many engineering applications to offer robustness against noise.
In large-scale systems, there are several types of noise that can affect the performance of …

We present BEAT, a set of practical Byzantine fault-tolerant (BFT) protocols for completely
asynchronous environments. BEAT is flexible, versatile, and extensible, consisting of five …

Facebook's corpus of photos, videos, and other Binary Large OBjects (BLOBs) that need to
be reliably stored and quickly accessible is massive and continues to grow. As the footprint …

Distributed storage systems for large-scale applications typically use replication for
reliability. Recently, erasure codes were used to reduce the large storage overhead, while …

This paper studies the problem of information symbol availability in codes: we refer to a
systematic code as code with (r, t)-availability if every information (systematic) symbol can be …

Data-intensive clusters and object stores are increasingly relying on in-memory object
caching to meet the I/O performance demands. These systems routinely face the challenges …

A fundamental fact about polynomial interpolation is that k evaluations of a degree-(k-1)
polynomial f are sufficient to determine f. This is also necessary in a strong sense: given k-1 …