Challenges in Large scale deployment #

1. Application Deployment - problems at the application level
2. Infrastructure Deployment - problems faced by hosting the application on the infrastructure
3. Operations - problem that arise during the maintainence of deployment

Application Deployment #

Typical components of large scale systems:

• Web Apps and replicas
• Microservices and replicas
• Databases
  • RDBMS and NoSQL
  • Replication and Sharding
• Message Queues
  • Replication and partitioning
• Caches
• Content Storage
• Log file storage
• Search & Analytics
• Directory / LDAP servers

Infrastructure Deployment #

Things we need to take into considersation for deploying the application at infrastructure level

• Compute Infrastructure : CPU, RAM, Disks
• Network
  • Secure Access : Firewalls, Certificates
  • Routing
• Load Balancers
  • Hard loadbalancers
  • Software loadbalancers
• DNS and Discovery Services
• Storage for Application : Content, VM/Container Images, Backups, Logs
• Mail Servers
• CDN

We must consider infrastructure support for Dev, Test, Stagging, and Prod enviroment as well.

Operations #

• Development Team :Develop - Build - Test - Package - Image
• Operations Team : Deployment - Logging - Monitoring - Scale - Failover - Hotbackups / Coldbackups

Deployment Solutions

• Application Deploypment : Containers(Docker)
• Infrastructure Deployment: Cloud(Aws/Azure/Gcp)
• Operations : Kubernetes
• Automations : Devops Tools(Vagrant/Ansible/Chef)