[BETA] Request Prioritization

info

Beta feature. Use for testing only.

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Prioritize LLM API requests in high-traffic.

• Add request to priority queue
• Poll queue, to check if request can be made. Returns 'True':
  • if there's healthy deployments
  • OR if request is at top of queue
• Priority - The lower the number, the higher the priority:
  • e.g. priority=0 > priority=2000

Quick Start

from litellm import Router

router = Router(
    model_list=[
        {
            "model_name": "gpt-3.5-turbo",
            "litellm_params": {
                "model": "gpt-3.5-turbo",
                "mock_response": "Hello world this is Macintosh!", # fakes the LLM API call
                "rpm": 1,
            },
        },
    ],
    timeout=2, # timeout request if takes > 2s
    routing_strategy="usage-based-routing-v2",
    polling_interval=0.03 # poll queue every 3ms if no healthy deployments
)

try:
    _response = await router.acompletion( # 👈 ADDS TO QUEUE + POLLS + MAKES CALL
        model="gpt-3.5-turbo",
        messages=[{"role": "user", "content": "Hey!"}],
        priority=0, # 👈 LOWER IS BETTER
    )
except Exception as e:
    print("didn't make request")

LiteLLM Proxy

To prioritize requests on LiteLLM Proxy add priority to the request.

curl

curl -X POST 'http://localhost:4000/chat/completions' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer sk-1234' \
-D '{
    "model": "gpt-3.5-turbo-fake-model",
    "messages": [
        {
        "role": "user",
        "content": "what is the meaning of the universe? 1234"
        }],
    "priority": 0 👈 SET VALUE HERE
}'

OpenAI SDK

import openai
client = openai.OpenAI(
    api_key="anything",
    base_url="http://0.0.0.0:4000"
)

# request sent to model set on litellm proxy, `litellm --model`
response = client.chat.completions.create(
    model="gpt-3.5-turbo",
    messages = [
        {
            "role": "user",
            "content": "this is a test request, write a short poem"
        }
    ],
    extra_body={ 
        "priority": 0 👈 SET VALUE HERE
    }
)

print(response)

Advanced - Redis Caching

Use redis caching to do request prioritization across multiple instances of LiteLLM.

SDK

from litellm import Router

router = Router(
    model_list=[
        {
            "model_name": "gpt-3.5-turbo",
            "litellm_params": {
                "model": "gpt-3.5-turbo",
                "mock_response": "Hello world this is Macintosh!", # fakes the LLM API call
                "rpm": 1,
            },
        },
    ],
    ### REDIS PARAMS ###
    redis_host=os.environ["REDIS_HOST"], 
    redis_password=os.environ["REDIS_PASSWORD"], 
    redis_port=os.environ["REDIS_PORT"], 
)

try:
    _response = await router.acompletion( # 👈 ADDS TO QUEUE + POLLS + MAKES CALL
        model="gpt-3.5-turbo",
        messages=[{"role": "user", "content": "Hey!"}],
        priority=0, # 👈 LOWER IS BETTER
    )
except Exception as e:
    print("didn't make request")

PROXY

model_list:
    - model_name: gpt-3.5-turbo-fake-model
      litellm_params:
        model: gpt-3.5-turbo
        mock_response: "hello world!" 
        api_key: my-good-key

litellm_settings:
    request_timeout: 600 # 👈 Will keep retrying until timeout occurs

router_settings:
    redis_host; os.environ/REDIS_HOST
    redis_password: os.environ/REDIS_PASSWORD
    redis_port: os.environ/REDIS_PORT

$ litellm --config /path/to/config.yaml 

# RUNNING on http://0.0.0.0:4000s

curl -X POST 'http://localhost:4000/queue/chat/completions' \
-H 'Content-Type: application/json' \
-H 'Authorization: Bearer sk-1234' \
-D '{
    "model": "gpt-3.5-turbo-fake-model",
    "messages": [
        {
        "role": "user",
        "content": "what is the meaning of the universe? 1234"
        }],
    "priority": 0 👈 SET VALUE HERE
}'