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#php
#kotlin
#bash
#go
#sql
#rust
#typescript
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#java
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Kotlin
async / await for Parallel Results
`async` returns a `Deferred<T>` — like a Future. Use it when you need a RESULT back, in parallel. Call `.await()` to get the value (suspends until ready).
@admin
Bash
SSH to Multiple Hosts in Parallel
Run the same command on a fleet of hosts. Three patterns: serial loop (simplest), GNU parallel (fastest), pssh (purpose-built).
Bash
Background Jobs + wait
Run several commands in parallel with `&`, then wait for all of them with `wait`. Collect exit codes via $! and check after wait returns.
Rust
Rayon — Parallel Iterators
`rayon` lets you parallelize CPU-bound iterator chains by changing `.iter()` to `.par_iter()`. Handles thread-pool, work-stealing, and synchronization for you.