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1. Postgresql operations Postgresql operations

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   This guide includes queries for postgreql

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   ### misc/utility commands

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   Set pager off

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   ```sql

2. counter-app counter-app Public

   redis based counter app

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3. redis_ops.md redis_ops.md

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   # delete the keys in redis with prefix

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   ```lua

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   EVAL "local keys = redis.call('keys', ARGV[1]) \n for i=1,#keys,5000 do \n redis.call('del', unpack(keys, i, math.min(i+4999, #keys))) \n end \n return keys" 0 prefix:*

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   ```

4. A simple script to print the size of... A simple script to print the size of all your Redis keys.

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   #!/usr/bin/env bash

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   # This script prints out all of your Redis keys and their size in a human readable format

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   # Copyright 2013 Brent O'Connor

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   # License: http://www.apache.org/licenses/LICENSE-2.0

5. env-echo env-echo Public

   print envs which starts with HASURA_

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