Fix: externalizing network I/O in serverless computing

TL;DR

This paper introduces a serverless computing system that externalizes network I/O, allowing the platform to handle data movement, which improves scheduling and reduces starvation, shifting the service model towards pay-for-results.

Contribution

It proposes a novel system where data movement is managed by the platform, enabling more efficient scheduling and a shift to result-based payment in serverless computing.

Findings

Enhanced scheduling efficiency

Reduced network starvation

Shifted to pay-for-results model

Abstract

We describe a system for serverless computing where users, programs, and the underlying platform share a common representation of a computation: a deterministic procedure, run in an environment of well-specified data or the outputs of other computations. This representation externalizes I/O: data movement over the network is performed exclusively by the platform. Applications can describe the precise data needed at each stage, helping the provider schedule tasks and network transfers to reduce starvation. The design suggests an end-to-end argument for outsourced computing, shifting the service model from ``pay-for-effort'' to ``pay-for-results.''