ジョブのリトライ、遅延、チェーン

<?php
class SendWelcomeEmail implements ShouldQueue
{
    public int $tries = 3; // retry up to 3 times
}

<?php
public int $maxExceptions = 3;

<?php
public int $backoff = 60; // wait 60 seconds before retry

// Or exponential backoff:
public function backoff(): array
{
    return [1, 5, 10]; // 1s, 5s, 10s between attempts
}

<?php
public int $timeout = 120; // 2 minutes max

<?php
SendReminder::dispatch($user)->delay(now()->addDay());
// Or pass a Carbon instance:
SendReminder::dispatch($user)->delay(Carbon::tomorrow());

<?php
public function handle(): void
{
    try {
        // ...
    } catch (TransientException $e) {
        $this->release(30); // re-queue in 30 seconds
    } catch (FatalException $e) {
        $this->fail($e);   // mark as failed now
    }
}

<?php
public function failed(\Throwable $exception): void
{
    // Notify team, update DB, etc.
    Log::error("Job failed: ".$exception->getMessage());
}

<?php
Bus::chain([
    new DownloadFile($url),
    new ProcessFile($path),
    new NotifyUser($user),
])->dispatch();

<?php
Bus::chain([...])
    ->catch(fn (\Throwable $e) => Log::error($e))
    ->dispatch();

<?php
Bus::batch([
    new ImportRow($rows[0]),
    new ImportRow($rows[1]),
])->then(fn ($b) => Log::info("All done"))
  ->catch(fn ($b, $e) => Log::error($e))
  ->dispatch();