How to effectively stay in-sync when using dfuse streaming API












0















I'm using dfuse streaming API to built a EOS based application.
I want to keep an in-sync view of all the data flowing through my smart contract.



I want to ensure that I will always be in sync so I never miss a single block. Using the dfuse streaming API, how can I achieve that?






blockchain eos dfuse







share|improve this question



























    0















    I'm using dfuse streaming API to built a EOS based application.
    I want to keep an in-sync view of all the data flowing through my smart contract.



    I want to ensure that I will always be in sync so I never miss a single block. Using the dfuse streaming API, how can I achieve that?






    blockchain eos dfuse







    share|improve this question

























      0












      0








      0








      I'm using dfuse streaming API to built a EOS based application.
      I want to keep an in-sync view of all the data flowing through my smart contract.



      I want to ensure that I will always be in sync so I never miss a single block. Using the dfuse streaming API, how can I achieve that?






      blockchain eos dfuse







      share|improve this question














      I'm using dfuse streaming API to built a EOS based application.
      I want to keep an in-sync view of all the data flowing through my smart contract.



      I want to ensure that I will always be in sync so I never miss a single block. Using the dfuse streaming API, how can I achieve that?






      blockchain eos dfuse




      blockchain eos dfuse






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 22 '18 at 21:07









      MattMatt

      8,57513648




      8,57513648
























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          Using the with_progress feature of the Websocket API, you will receive one progress message after each block was processed.



          For a given stream (corresponding to a request and an associated req_id), when you received a progress for a block, you are guaranteed to have seen all the contents it contained in your query (the actions for get_action_traces, or the rows for get_table_rows).



          If you keep track of that block_num and/or block_id, upon disconnection/reconnections, you can provide it back in your request, and be guaranteed never to miss a beat, even if that means you're reprocessing 1M blocks.



          As of November 22nd 2018, the get_table_rows request will stream table_delta messages that include an "undo"/"redo" step. This allows your app to navigate forks and ensure absolute sync of your application with the longest chain's state.



          Check the docs at https://docs.dfuse.io/ and search for with_progress for more details.






          share|improve this answer























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            1 Answer
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            active

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            Using the with_progress feature of the Websocket API, you will receive one progress message after each block was processed.



            For a given stream (corresponding to a request and an associated req_id), when you received a progress for a block, you are guaranteed to have seen all the contents it contained in your query (the actions for get_action_traces, or the rows for get_table_rows).



            If you keep track of that block_num and/or block_id, upon disconnection/reconnections, you can provide it back in your request, and be guaranteed never to miss a beat, even if that means you're reprocessing 1M blocks.



            As of November 22nd 2018, the get_table_rows request will stream table_delta messages that include an "undo"/"redo" step. This allows your app to navigate forks and ensure absolute sync of your application with the longest chain's state.



            Check the docs at https://docs.dfuse.io/ and search for with_progress for more details.






            share|improve this answer




























              1














              Using the with_progress feature of the Websocket API, you will receive one progress message after each block was processed.



              For a given stream (corresponding to a request and an associated req_id), when you received a progress for a block, you are guaranteed to have seen all the contents it contained in your query (the actions for get_action_traces, or the rows for get_table_rows).



              If you keep track of that block_num and/or block_id, upon disconnection/reconnections, you can provide it back in your request, and be guaranteed never to miss a beat, even if that means you're reprocessing 1M blocks.



              As of November 22nd 2018, the get_table_rows request will stream table_delta messages that include an "undo"/"redo" step. This allows your app to navigate forks and ensure absolute sync of your application with the longest chain's state.



              Check the docs at https://docs.dfuse.io/ and search for with_progress for more details.






              share|improve this answer


























                1












                1








                1







                Using the with_progress feature of the Websocket API, you will receive one progress message after each block was processed.



                For a given stream (corresponding to a request and an associated req_id), when you received a progress for a block, you are guaranteed to have seen all the contents it contained in your query (the actions for get_action_traces, or the rows for get_table_rows).



                If you keep track of that block_num and/or block_id, upon disconnection/reconnections, you can provide it back in your request, and be guaranteed never to miss a beat, even if that means you're reprocessing 1M blocks.



                As of November 22nd 2018, the get_table_rows request will stream table_delta messages that include an "undo"/"redo" step. This allows your app to navigate forks and ensure absolute sync of your application with the longest chain's state.



                Check the docs at https://docs.dfuse.io/ and search for with_progress for more details.






                share|improve this answer













                Using the with_progress feature of the Websocket API, you will receive one progress message after each block was processed.



                For a given stream (corresponding to a request and an associated req_id), when you received a progress for a block, you are guaranteed to have seen all the contents it contained in your query (the actions for get_action_traces, or the rows for get_table_rows).



                If you keep track of that block_num and/or block_id, upon disconnection/reconnections, you can provide it back in your request, and be guaranteed never to miss a beat, even if that means you're reprocessing 1M blocks.



                As of November 22nd 2018, the get_table_rows request will stream table_delta messages that include an "undo"/"redo" step. This allows your app to navigate forks and ensure absolute sync of your application with the longest chain's state.



                Check the docs at https://docs.dfuse.io/ and search for with_progress for more details.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 22 '18 at 21:41









                abourgetabourget

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                1,7421416
































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