Product updates: Sandbox Sidecars, new models, a refreshed dashboard, and more | Modal Blog

Introduced Sandbox Sidecars in public alpha, allowing additional containers to run alongside a main Sandbox on the same host, connected via a low-latency internal network. Provided code examples for using sidecars for custom network proxies and multi-container workloads. Announced VM Sandboxes entering public beta, supporting workloads requiring a real Linux kernel, Docker-in-Docker, eBPF, systemd, cgroups, or custom filesystem mounts. Highlighted improved filesystem performance for I/O-sensitive workloads with VM Sandboxes. Announced Sandbox directory snapshots and the new Sandbox filesystem API are now GA, with directory snapshots allowing snapshots of selected directories for faster session resumptions and state restoration, and the new API offering improved reliability and performance for small files. Shipped new graphs for better observability of Sandbox CPU and memory requests to aid in tuning request sizes.