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# System prepended metadata

title: Designing a Sequencer Deployment Service

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### Designing a Sequencer Deployment Service

#### Objective:
Cartridge operates Slot, a managed infrastructure as a service solution which developers to rapidly deploy sequencers and indexers at the edge, providing high performance, low latency execution contexts for players. For this task, we would like you to propose an architecture that accomplishes that same goal.

Please review the requirements below and put together a document / architecture diagram with your proposed solution. As a follow up, we will schedule a call to walk through the solution together. It is not necessary for the design document to cover all the requirements below but pleaes be ready to discuss them during our follow up call.

The primary focus of this exercise is on the reasoning behind your design choices, rather than specific technologies. 

#### Requirements:
1. **Architecture Overview**:
    - Describe the key components you would include in the deployment service architecture. Thinking through the entire lifecycle of a users request, both on the developer side spinning up a sequencer and on the player side interacting with a sequencer.
    - Discuss how you would ensure the deployment service and sequenecers are reliable, secure, and easy to use.

2. **Monitoring and Observability**:
    - Detail the monitoring and observability tools and practices you would implement. Provide examples of some 
    - Explain how these tools will help in maintaining the service and ensuring its uptime.
    - Describe how you would set up alerting mechanisms for potential issues.

3. **Scalability**:
    - Discuss how you would design the system to handle increasing loads.
    - Describe your approach to scaling both the deployment service, the infrastructure it runs on, and the processes necessary to operate it.

4. **Maintenance and Upgrades**:
    - Outline the strategies you would use to perform maintenance and upgrades with minimal downtime.
    - Explain how you would handle configuration changes and version control.

5. **Security**:
    - Describe the security measures you would implement to protect the deployment service and the infrastructure.
    - Describe approaches you might take for securing secrets in production.

#### Evaluation Criteria:
- **Clarity and Thoroughness**: How clearly and thoroughly you explain your design choices.
- **Reasoning**: The rationale behind your decisions and the principles guiding your design.
- **Scalability and Reliability**: How well your design can scale and avoid single points of failure.
- **Maintenance and Monitoring**: Your approach to maintaining and monitoring the service.
