Fly V3 Script -
Fly V3 scripts operate in hostile environments (network flaps, API throttling). Implement exponential backoff natively:
| Feature | Fly V2 | Fly V3 | | :--- | :--- | :--- | | Syntax | Callback-based ( callback(err, res) ) | Async/Await | | State | Volatile (lost on restart) | Persistent (disk-backed) | | Concurrency | Manual Promise.all | Built-in Fly.parallelMap | | Error Handling | .catch() blocks | Try/Catch with automatic retries | fly v3 script
for (const target of targets) const result = await checkEndpoint(target); if (!result.healthy) console.error(`[FAIL] $target - $result.error`); state.consecutive_failures++; if (state.consecutive_failures >= 3) console.log("Initiating recovery procedure..."); await executeRecovery(target); state.consecutive_failures = 0; else console.log(`[PASS] $target - $result.latencyms`); state.consecutive_failures = Math.max(0, state.consecutive_failures - 1); Fly V3 scripts operate in hostile environments (network
// Example Fly V3 Init const config = endpoint: "https://api.flyv3.example", retries: 3, timeout: 5000 ; let session = null; The heart of the script. Fly V3 is reactive; it waits for triggers (time-based, HTTP, or socket events). The handler processes these triggers. The handler processes these triggers