Service Rate Region: A New Aspect of Coded Distributed System Design

Mehmet Aktas, Gauri Joshi, Swanand Kadhe, Fatemeh Kazemi, Emina Soljanin

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Erasure coding has been recognized as a powerful method to mitigate delays due to slow or straggling nodes in distributed systems. This work shows that erasure coding of data objects can flexibly handle skews in the request rates. Coding can help boost the service rate region, that is, increase the overall volume of data access requests that the system can handle. This paper aims to postulate the service rate region as an important consideration in the design of erasure-coded distributed systems. We highlight several open problems that can be grouped into two broad threads: 1) characterizing the service rate region of a given code and finding the optimal request allocation, and 2) designing the underlying erasure code for a given service rate region. As contributions along the first thread, we find the rate regions of maximum-distance-separable, locally repairable, and simplex codes. We show the effectiveness of hybrid codes that combine replication and erasure coding in terms of code design. We also discover fundamental connections between multi-set batch codes and the problem of maximizing the service rate region.

Original languageEnglish (US)
Pages (from-to)7940-7963
Number of pages24
JournalIEEE Transactions on Information Theory
Issue number12
StatePublished - Dec 1 2021

All Science Journal Classification (ASJC) codes

  • Information Systems
  • Computer Science Applications
  • Library and Information Sciences


  • Erasure coded storage
  • batch codes
  • coded computing
  • distributed systems
  • resource allocation


Dive into the research topics of 'Service Rate Region: A New Aspect of Coded Distributed System Design'. Together they form a unique fingerprint.

Cite this