Ephemeral sandboxes reset per task; persistent ones keep files across sessions. How to choose for AI agents, and what burst workloads need.
Read Ephemeral vs Persistent Sandboxes: Which One Your Agent Workload Needs
Guide · Daniel Botha
Fly.io vs Railway for a normal web app: where config lives, how deploys roll out, idle services, managed Postgres, scaling workers, and room to grow.
Read Fly.io vs Railway: Deploys, Idle Apps, Databases and Scaling Compared
Guide · Daniel Botha
Fly.io vs Render for a normal web app: how deploys roll out, what happens when traffic stops, Postgres failover, workers and cron, and room to grow.
Read Fly.io vs Render: Deploys, Idle Apps, Postgres and Workers Compared
Guide · Daniel Botha
AI sandbox pricing compared: E2B, Daytona, Modal, Vercel, Cloudflare and Fly.io Sprites rates, the four billing models, and one agent workload priced end to end.
Read AI Sandbox Pricing, Compared: What Agent Sandboxes Cost and How the Billing Models Differ
Guide · Daniel Botha
Firecracker vs gVisor for running untrusted and agent-generated code: how each isolates, the two threat models, cold start and I/O overhead, and which to pick.
Read Firecracker vs gVisor: Sandbox Isolation for Untrusted and Agent-Generated Code
Guide · Daniel Botha
Vercel, Render, Heroku, Railway and Fly.io pricing side by side: the four billing models, what each plan really includes, and one app priced on all five.
Read PaaS Pricing Compared: What Vercel, Render and Heroku Actually Cost
Guide · Daniel Botha
E2B, Modal, Daytona, Vercel Sandbox, Cloudflare Sandbox and Fly.io Sprites compared on isolation, state between turns, idle behaviour, session caps and egress control.
Read Where to Run Agent Code: AI Agent Sandbox Providers Compared
Guide · Daniel Botha
Eight Heroku alternatives compared the same way: Render, Railway, DigitalOcean, Vercel, Netlify, Platform.sh, Northflank and Fly.io, with current pricing.
Read Top Heroku Alternatives
Guide · Daniel Botha
How Fly.io Sprites compare with Northflank for secure AI code execution: isolation, what a sandbox boots from, billing basis, checkpoints, and where each platform is the better choice.
Read Top Northflank Alternatives for Secure AI Code Execution and Sandboxed Environments
Guide · Daniel Botha
Learn what an agent sandbox is, how a sandbox VM isolates tools and state, and how to test agent behavior without touching production systems
Read Agent Sandboxes: Isolated Runtimes for Testing AI Agent Behavior
Guide · Daniel Botha
A cloud development environment moves your workspace off your laptop. What CDEs actually fix, where developers say they fall short, and how to decide.
Read Cloud Development Environments: What They Fix, and What They Don't
Guide · Daniel Botha
What a virtual sandbox is, how it differs from a VM and a container, the isolation ladder from language sandboxes to hardware, and what it does not protect.
Read Virtual Sandbox
Guide · Daniel Botha
How Fly.io Sprites and Cloudflare's Sandbox SDK differ on disk persistence, sleep behavior, preview URLs, isolation, and where agent state actually lives.
Read Fly.io vs Cloudflare: Agent Computers vs Ephemeral Edge Containers
Guide · Daniel Botha
How Fly.io Sprites and Daytona differ on auto-stop and auto-archive timers, disk size, named isolation, process supervision, and credential handling.
Read Fly.io vs Daytona: Lifecycle Timers, Disk Limits, and Isolation Compared
Guide · Daniel Botha
How Fly.io Sprites and E2B differ on pause cost, runtime limits, process supervision, wake behavior, and where agent credentials actually live.
Read Fly.io vs E2B: Persistent Agent Computers vs Pause and Resume Sandboxes
Guide · Daniel Botha
How Fly.io Sprites and Modal Sandboxes differ on persistence, duration caps, snapshot restore, gVisor vs Firecracker isolation, and GPU workloads.
Read Fly.io vs Modal: Agent Sandboxes, Snapshots, and Isolation Compared
Guide · Daniel Botha
How Fly.io Sprites and Vercel Sandbox differ on process state, session caps, snapshot expiry, wake behavior, and how each keeps credentials out of agent code.
Read Fly.io vs Vercel Sandbox: Persistence, Sessions, and Credentials Compared
Guide · Daniel Botha
AWS, Google Cloud, and Azure lead startup hosting, with managed platforms for speed and Fly.io for global compute without hyperscaler overhead
Read Choosing a Cloud for Your Startup: AWS, Google Cloud, Azure, and Managed Platforms Compared
Guide · Daniel Botha
Serverless hosting scales by spinning up function instances on demand for each request, then scaling to zero when traffic stops, avoiding idle compute costs
Read How Serverless Hosting Scales: Instances, Cold Starts, and Concurrency Limits
Guide · Daniel Botha
Node.js hosting depends on your workload: managed PaaS for Git deploys and autoscaling, VPS for root control, serverless for stateless functions
Read Node.js Hosting: How to Pick the Right Platform for Your App
Guide · Daniel Botha
The best Postgres hosting depends on workload: managed services handle backups, failover, and scaling, while self-hosted gives full control and more toil
Read Postgres Hosting: How to Choose the Right Option for Your App
Guide · Daniel Botha
Golang hosting for statically linked Go binaries: bind ports, supervise processes, manage memory, and ship logs and metrics on Linux or Fly.io
Read Go runs as a single binary. Your hosting environment still has to do real work.
Guide · Daniel Botha
MicroVM vs container: compare kernel isolation, startup time, memory overhead, and blast radius to choose the right boundary for untrusted code
Read MicroVM vs Container: How the Kernel Boundary Changes Everything
Guide · Daniel Botha
Rails hosting on Fly.io: learn the runtime, Puma, asset precompilation, background jobs, and deployment details that keep production deploys stable
Read Rails Hosting: What Your App Actually Needs to Run in Production
Guide · Daniel Botha
Rust hosting on Fly.io: deploy compiled binaries, handle cross-compilation, TLS, restarts, logging, and run Rust backends with Svelte frontends
Read Rust Hosting: How to Deploy Compiled Binaries Without the Operational Mess
Guide · Daniel Botha
Firecracker VM basics: learn how microVMs use KVM, a reduced device model, and seccomp jailers to run isolated Linux workloads with low overhead
Read What Is a Firecracker VM?