The key line is the nested URL: {{{FromExp=fromJSON(fRes).author_key[0]}}} is an expr-lang expression evaluated against the current item (fRes) — parse it, take the first author key, splice it into the URL. Anything expr-lang can compute can become part of a request: pick a field, concatenate, add an offset, branch on a condition. And notice the output shape: each book keeps its own scalar fields while the... - Source: dev.to / 19 days ago

With OIDC enabled you can leverage fine-grained access control through GroupBinding custom resources. Use the Expr language to bind the groups claim in a user's JWT to specific modules or providers. The moduleResources field also supports glob patterns:. - Source: dev.to / 3 months ago

Expressions are evaluated with expr-lang, a Go expression evaluator. Variables come from the threaded environment:. - Source: dev.to / 6 months ago

The included Modal adapter implements remote submission, status, ordered events, result retrieval, resume, and cancellation. Docker and Modal Sandboxes implement the runtime's native sandbox contract for isolated code execution and generated artifacts. - Source: dev.to / 13 days ago

If you've used E2B, Daytona, Modal sandboxes, or Cloudflare Sandboxes, the shape is familiar: REST API, Python and JS SDKs, exec / files / snapshot primitives. Here's what the Python SDK looks like:. - Source: dev.to / 3 months ago

The supported environments include your local machine, Docker containers, remote SSH servers, and two serverless options called Daytona and Modal. Daytona and Modal are the interesting ones for beginners as they handle all the infrastructure for you, and you only pay for compute when Hermes is actively doing something. - Source: dev.to / 4 months ago

TL;DR: If you just need to ship fast, E2B has the best SDK experience. If you need the fastest cold starts, Blaxel wins at 25ms. For GPU workloads, Modal is unmatched. For self-hosted control, Daytona is open-source with a managed option. For persistent long-running sessions, Fly.io Sprites gives you 100GB NVMe per sandbox. - Source: dev.to / 5 months ago

* dramatically increasing inference throughput on [modal.com](http://modal.com) meant I could generate 10s of thousands of tiles in a few hours at very little cost, allowing me to experiment much more rapidly This project continues to be a lot of fun, but I’m now mostly focusing on the agentic workflows that power this kind of ambitious generation at scale. Can’t wait to share more soon. - Source: Hacker News / 6 months ago