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# Data Distribution Mechanism

Dang CDN System uses 2 data distribution methods: PULL for input data, and PUSH for output data.

Detail:

* [PULL](/vcdn/tong-quan/overview-architecture/co-che-phan-phoi-du-lieu/phuong-phap-pull.md)
* [PUSH](/vcdn/tong-quan/overview-architecture/co-che-phan-phoi-du-lieu/phuong-phap-push.md)