Redis

DoubleDino Proxy supports Redis key lookup.

Redis uses a different query model from databases such as PostgreSQL or MongoDB.

Instead of querying records, you request values using Redis keys.

Endpoint

Use:

/redis

Basic key lookup

Example:

Retrieve a value:

curl

curl -G "http://localhost:8080/redis" \
  --data-urlencode "key=cache:user:123" \
  -H "x-api-key: your-api-key"

Node.js / Bun

const response = await fetch(
  "http://localhost:8080/redis?key=" +
  encodeURIComponent("cache:user:123"),
  {
    headers: {
      "x-api-key": "your-api-key"
    }
  }
);

const data = await response.json();

console.log(data);

Python

import requests

response = requests.get(
    "http://localhost:8080/redis",
    params={
        "key": "cache:user:123"
    },
    headers={
        "x-api-key": "your-api-key"
    }
)

print(response.json())

Key patterns

Redis key patterns are supported.

Example:

curl -G "http://localhost:8080/redis" \
  --data-urlencode "key=cache:user:*" \
  -H "x-api-key: your-api-key"

This allows retrieving multiple matching keys.

JSON values

If a Redis value contains JSON, DoubleDino transforms nested values while preserving the original structure.

Example:

Original value:

{
  "user_id": 123,
  "email": "[email protected]",
  "preferences": {
    "theme": "dark"
  }
}

Returned value:

{
  "user_id": 123,
  "email": "[email protected]",
  "preferences": {
    "theme": "dark"
  }
}

The JSON structure remains usable by applications.

Debugging production issues

A common workflow:

A developer receives a real Redis key:

session:user:abc123

They query:

curl -G "http://localhost:8080/redis" \
  --data-urlencode "key=session:user:abc123" \
  -H "x-api-key: your-api-key"

The returned value is transformed while preserving the structure needed for debugging.

Preserving known expressions

If enabled by your administrator, additional expressions can be preserved per request.

Header:

x-preserve-expressions

Example:

-H "x-preserve-expressions: tracking metadata"

This requires:

DD_ALLOW_DYNAMIC_EXPRESSIONS=true

Notes

• DoubleDino does not modify Redis data.
• Keys are used to retrieve values.
• Returned values are transformed.
• JSON structures are preserved.
• The original Redis instance remains unchanged.

Next steps

Continue with:

• Logs