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Write a recipe on using off-chain indexing #398

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jimmychu0807 opened this issue Dec 11, 2020 · 0 comments
Open

Write a recipe on using off-chain indexing #398

jimmychu0807 opened this issue Dec 11, 2020 · 0 comments

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@jimmychu0807
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jimmychu0807 commented Dec 11, 2020 •
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Either create a recipe of this, or write a guide in the Runtime section of developer guide.

Extracted notes from @tomusdrw:

To use indexing data from Runtime:

sp_io::offchain_index::set(&b"my_key", &"my_value".encode());

Data in Off-chain DB can be either read by Off-chain workers (local storage API) or via RPC, using
offchain_localStorageGet method.
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