# Sequence of processing

**URL:** <https://discourse.nodered.org/t/sequence-of-processing/7164>\
**Category:** General\
**Created:** [23 January 2019 10:30 UTC](https://discourse.nodered.org/t/sequence-of-processing/7164 "2019-01-23T10:30:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Tobi](https://avatars.discourse-cdn.com/v4/letter/t/b9e5f3/32.png) [@Tobi](https://discourse.nodered.org/u/Tobi)\
**Post date:** [23 January 2019 10:30 UTC](https://discourse.nodered.org/t/sequence-of-processing/7164/1 "2019-01-23T10:30:28Z")

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Hi,

what is the order of processing. Does this happen in parallel or sequentially?

Which tab is processed first and which node in the tab ?

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**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [23 January 2019 10:39 UTC](https://discourse.nodered.org/t/sequence-of-processing/7164/2 "2019-01-23T10:39:57Z")

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see [Node registration order](https://discourse.nodered.org/t/node-registration-order/6779)