1 - It all starts with CI/CD pipelines that deploy code to the server instances. Tools like Jenkins and GitHub help over here.
2 - The user requests originate from the web browser. After DNS resolution, the requests reach the app servers.
3 - Load balancers and reverse proxies (such as Nginx & HAProxy) distribute user requests evenly across the web application servers.
4 - The requests can also be served by a Content Delivery Network (CDN).
5 - The web app communicates with backend services via APIs.
6 - The backend services interact with database servers or distributed caches to provide the data.
7 - Resource-intensive and long-running tasks are sent to job workers using a job queue.
8 - The full-text search service supports the search functionality. Tools like Elasticsearch and Apache Solr can help here.
9 - Monitoring tools (such as Sentry, Grafana, and Prometheus) store logs and help analyze data to ensure everything works fine.
10 - In case of issues, alerting services notify developers through platforms like Slack for quick resolution.