
Andrew Williams developed and enhanced core features for Fastly’s Viceroy and CLI repositories, focusing on scalable access control and configuration management. He implemented new ACL hostcalls and CLI tooling in Rust and WebAssembly, enabling secure, flexible access control list operations and robust test coverage. In Viceroy, he upgraded the Fastly crate to expand hostcall support for HTTP requests and cache operations, aligning tests and adapters with SDK changes for improved reliability. For the Fastly CLI, he increased the maximum configuration store entry size, introducing safer defaults and per-user API enforcement. His work emphasized API development, system programming, and operational flexibility.

June 2025: Delivered a key CLI feature to increase the maximum configuration store entry size, enabling larger values and reducing the need for manual workarounds. The change implements a 64k limit with a default of 8k and per-user API enforcement, ensuring safe defaults and compliance. Commit reference for traceability: 7eeb8ca18a09a67480567d0c61626db1404446d3 ("Increase max config store value length"; #1485). No major bugs fixed this month; focus was on feature delivery, reliability, and user experience. Business impact: improved flexibility for large configurations in the Fastly CLI, reducing friction for deployments and configurations.
June 2025: Delivered a key CLI feature to increase the maximum configuration store entry size, enabling larger values and reducing the need for manual workarounds. The change implements a 64k limit with a default of 8k and per-user API enforcement, ensuring safe defaults and compliance. Commit reference for traceability: 7eeb8ca18a09a67480567d0c61626db1404446d3 ("Increase max config store value length"; #1485). No major bugs fixed this month; focus was on feature delivery, reliability, and user experience. Business impact: improved flexibility for large configurations in the Fastly CLI, reducing friction for deployments and configurations.
December 2024 monthly summary for fastly/Viceroy. Delivered a crate upgrade with hostcall enhancements and expanded capabilities: upgraded the Fastly crate to 0.11.1, enabling new hostcalls for HTTP requests and cache operations; tests were updated to align with SDK changes; the adapter was enhanced to surface previously unsupported hostcalls, increasing Fastly service coverage and reliability for deployments.
December 2024 monthly summary for fastly/Viceroy. Delivered a crate upgrade with hostcall enhancements and expanded capabilities: upgraded the Fastly crate to 0.11.1, enabling new hostcalls for HTTP requests and cache operations; tests were updated to align with SDK changes; the adapter was enhanced to surface previously unsupported hostcalls, increasing Fastly service coverage and reliability for deployments.
November 2024 monthly summary for developer work focusing on Fastly ACL integration in fastly/Viceroy. Delivered new ACL hostcalls and related tooling to enable secure, scalable access control configurations with robust tests and CLI support.
November 2024 monthly summary for developer work focusing on Fastly ACL integration in fastly/Viceroy. Delivered new ACL hostcalls and related tooling to enable secure, scalable access control configurations with robust tests and CLI support.
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