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Modern Systems. Design principles for scalable, resilient, and maintainable architectures.
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Introduction. Presented by Abishek Thakur on Design principles of modern systems. This presentation outlines core principles to build scalable and resilient systems, focusing on practical strategies and architectural choices to meet performance, reliability, and operational goals..
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01. Scalability & Resilience.
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Load balancing. Distributes traffic across resources to ensure even utilization and reduce latency. Use algorithms like round-robin, least-connections, and health-aware routing. Implement horizontal scaling and session affinity as needed to maintain performance under load..
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Fault tolerance. Ensures system continues operating despite component failures through redundancy and graceful degradation. Apply replication, circuit breakers, and retry policies. Measure MTTR and design for automated failover to minimize user impact..
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Autoscaling strategies. Implement horizontal autoscaling to add/remove instances based on metrics like CPU, latency, or request rate. Combine rule-based and predictive policies with cooldowns and warm pools to balance cost and responsiveness..
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02. Architecture & Design.
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Modular architecture. Design bounded contexts and services with clear interfaces to enable independent development and deployment. Prioritize loose coupling and strong cohesion to simplify maintenance and accelerate delivery..
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Design patterns. Leverage patterns like circuit breaker, bulkhead, and event sourcing to address reliability and scalability concerns. Select patterns that align with operational goals and complexity budget..
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Data consistency models. Choose between strong, eventual, and causal consistency based on business requirements and latency tolerance. Use saga patterns or compensating transactions for distributed workflows needing consistency without sacrificing availability..
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Conclusions. Summarize key principles: scalability, resilience, modular design, and appropriate consistency choices. Align architecture with operational metrics and business priorities to deliver reliable, maintainable systems..
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