Ethereum: Monitor Uniswap Swap Events of hundreds of pairs concurrently

Monitoring of Uniswap SWAP events: Speed ​​Restrictions Management with UNNISWAP V2

As a developer working with the platforms of decentralized funding (Defi), understanding and limiting the speed of manipulation is decisive. One of the common problems that arise in the implementation of complex monitoring solutions, such as our example, is the limiting speed stored by the interplanetary file (IPFS) and Infura.

In this article, we will discuss how to monitor Uniswap swap events of hundreds or couples competitively, alleviating potential speed limitation problems using Infura API.

Overview API UNISWAP V2

Before you dive into the solution, let’s quickly examine the basics of the Uniswap V2 API. The UNISWAP API interface provides endpoints to obtain various swap information including:

  • Get /SWAP_PAIRS ': Loads the Avia Swap couples list.

  • Get/SWAP_PAIR/{pairs}: Retrieven detailed information about a particular pair swap.

  • Get /swap_events /{event_id}: Retrieven Last SWAP event for the ID.

Problem with Infura speed limit

Ethereum: Monitor Uniswap Swap Events of hundreds of pairs concurrently

Infura, an online platform providing free and paid hosting for IoT, blockchain and other decentralized application (DAPP) data services, uses IPF to store and serve assets. As a result, it introduces restriction of rates at public endpoints such as API Uniswap V2, for the following reasons:

1

  • Use of a public endpoint : Infura API are intended to mean access to the client’s application or local proxy server. However, this limits the ability to monitor and process large volumes or data from a competitor of multiple couples.

Solution: Monitor Uniswap swap events in a large

To overcome work restrictions, we can use the dosage processing concept to handle high -length events from multiple pairs. We create a script that continuously monitors the new SWAP events at the various end points of the API Uniswap V2 and stores them in the database.

Here is an example using Python:

`Python

Import requirements

Set API credentials (replace with your actual infura API keys)

API_KY = 'Your_api_KEY'

API_seCret = 'Your_api_secret'

Define End Points API UNISWAP V2 API

uniswap_v2_endpoints = [[

'

replacing your API ID project and the API key

'

replace another project ID and API key

]

Define the SWAP Event End for bulk processing

Bulk_process_endpoint = '

Def Monitor_uniswap_swap_events ():

For a couple in uniswap_v2_endpoints:

Response = Requests.get (F '{pairs}/swap_pairs')

Data = Respony.Json ()

Process each exchange event

For the item in the data ['Items']:

If “pair” in item and ['pairs] item is not in processed_swap_events:

Process_swap_event (item)

Def Process_Swap_Event (event):

Save the SWAP event in the database (eg Mongodb)

Processed_swap_event.add (event ['couples'])

If __name__ == '__main__':

Monitor_uniswap_swap_events ()

Example of using a case

If you want to illustrate how this script works, let’s say we want to monitor the 100 end points of the UNISWAP V2 for exchange events. To store each event in the database, we can edit the Process_SWAP_Event 'feature:

` Python

Children we import

Define the database connection settings (replace your actual database credentials)

Database_host = ‘your_database_host’

Database_username = ‘your_database_username’

Database_password = ‘Your_database_password’

Def Process_Swap_Event (event):

Create a dictionary that represents the SWAP event in the database

Database_event = {

‘Timestamp’: DATETIME.DATTIME.

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