WorkerBox

//overview

//stack

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// what WorkerBox is built with
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package stack
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var Stack = map[string][]string{
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"language":   {"Golang"},
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"processing": {"Concurrency", "Mutex", "Queues", "Worker Pool", "Retries"},
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"database":   {"GORM", "PostgreSQL"},
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}

//how it works

1. 01

   Add a job

   A job is added to the queue, along with whatever it needs to run.

2. 02

   A worker picks it up

   Several workers run concurrently, so many jobs can be processed at the same time.

3. 03

   Process or retry

   If a job fails, it is retried automatically instead of being dropped.

4. 04

   Dead-letter queue

   Jobs that keep failing are moved to a dead-letter queue, where they can be inspected and managed.

//features3 total

1. Concurrent workers

   Jobs are processed by several workers at the same time, so one slow job does not hold up the rest.

2. Automatic retries

   When a job fails it is retried automatically, so temporary errors do not need manual attention.

3. Dead-letter queue management

   Jobs that keep failing are set aside in a dead-letter queue, where they can be inspected and managed later.

//problems & fixes

• Failed jobs getting lost

  −Problem: A job that fails once should not silently disappear.

  +Solution: Retry it automatically, and move it to a dead-letter queue if it keeps failing.

• One slow job blocking the rest

  −Problem: Processing jobs one at a time makes everything wait on the slowest one.

  +Solution: Run a pool of concurrent workers so jobs are processed in parallel.