This study investigates the implementation of Time-To-Live (TTL) caching in a Content Delivery Network (CDN) model with API integration, simulating a hierarchical configuration of CDN edge servers across different administrative levels in Indonesia. The study focuses on the impact of TTL settings on key performance metrics such as latency, cache hit ratio, throughput, and bandwidth consumption, with a specific emphasis on scenarios where a 1 MB data object from the Central Government (Level 1) is predominantly accessed from edge servers at the village level (Level 5). The simulation involves a CDN architecture where the Central Government acts as the Main Server/Origin Server, with edge servers distributed across 38 Provinces (Level 2), 514 Regencies (Level 3), 7,277 Districts (Level 4), and 83,763 Villages (Level 5). This study demonstrates the critical role of TTL caching in optimizing content delivery in a hierarchical CDN model with API integration for Indonesia’s public information system. By strategically configuring TTL settings and deploying edge servers across multiple levels, the CDN effectively reduces latency, increases cache hit ratios, enhances throughput, and manages bandwidth consumption.

 

Time-To-Live (TTL), Latency, Throughput, Bandwidth, Content Delivery Networks (CDNs), Application Programming Interface (API), Caching, Origin Server, Edge Server, Hierarchical Configuration