Pub/Sub is a managed message broker for async communication. Publishers send messages (events), subscribers receive them. Decouples systems (publisher doesn't know subscribers). At-least-once delivery, ordering, filtering. Mastery takes 2-3 weeks. Mid-level practitioners earn 10-15% premium for designing event-driven architectures. Skill adjacent to Kafka, RabbitMQ, and event-streaming patterns.
Pub/Sub is a managed message broker. Publishers send messages to topics; subscribers receive from subscriptions. Messages are decoupled, publisher doesn't know who's listening. Used for event streaming (user signed up, product viewed, payment processed). At-least-once delivery: if subscriber crashes before acknowledging, message is redelivered. Ordering: within a partition, messages are ordered. Filtering: receive only messages matching criteria.
| Khu vực | Nhập môn | Trung cấp | Cao cấp |
|---|---|---|---|
| USA | $70k | $120k | $185k |
| UK | $50k | $88k | $140k |
| EU | $55k | $95k | $150k |
| CANADA | $75k | $125k | $195k |
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