Speaker Topics - No Fluff Just Stuff
NFJS2025

Graph Thinking at Scale: Algorithms that Power Systems

Graphs aren’t just academic. They drive modern systems: workflows (DAGs), build pipelines, microservice dependencies, and routing. This talk makes graph algorithms concrete with live, real-world examples and shows how to use AI + standard graph tooling (Graphviz/NetworkX/D3) to generate adjacency lists, visualizations, and test cases—fast. You’ll leave with patterns you can reuse in interviews and architecture reviews.

Why Now

  • Graphs drive workflows (Airflow DAGs), builds (Bazel), data (Spark DAGs), services (Jaeger).
  • Routing & dependencies = shortest paths, topo sort, cycle checks.
  • AI can generate adjacency lists, test cases, and visualizations in seconds.

Learning Outcomes

  • Apply BFS/DFS, cycle detection, topo sort, shortest paths to real systems.
  • Translate graphs → API design, schedulers, microservices.
  • Use AI + Graphviz/NetworkX/D3 for quick visualization & validation.

Core Content

  • Graphs in production vs interviews.
  • BFS/DFS → reachability, unweighted search.
  • Dijkstra / A* → routing & latency.
  • Topo sort → job/build scheduling; cycle detection → fail-fast.
  • AI demo: prompt → adjacency → Graphviz/NetworkX/D3 render.

Agenda (45–60 min)

  1. Graphs in real systems (Airflow, Bazel, Spark, Jaeger).
  2. BFS/DFS for routing/search.
  3. Shortest paths (Dijkstra, A*).
  4. Topo sort & cycle detection.
  5. AI demo: generate & visualize graphs.
  6. Wrap-up & Q&A.

Takeaways

  • Graph design checklist (nodes, edges, cycles).
  • AI prompt pack for adjacency/tests.
  • Starter snippets: Graphviz DOT, NetworkX, D3 templates.

Rohit Bhardwaj

About Rohit Bhardwaj

Rohit Bhardwaj is a Director of Architecture working at Salesforce. Rohit has extensive experience architecting multi-tenant cloud-native solutions in Resilient Microservices Service-Oriented architectures using AWS Stack. In addition, Rohit has a proven ability in designing solutions and executing and delivering transformational programs that reduce costs and increase efficiencies.

As a trusted advisor, leader, and collaborator, Rohit applies problem resolution, analytical, and operational skills to all initiatives and develops strategic requirements and solution analysis through all stages of the project life cycle and product readiness to execution.
Rohit excels in designing scalable cloud microservice architectures using Spring Boot and Netflix OSS technologies using AWS and Google clouds. As a Security Ninja, Rohit looks for ways to resolve application security vulnerabilities using ethical hacking and threat modeling. Rohit is excited about architecting cloud technologies using Dockers, REDIS, NGINX, RightScale, RabbitMQ, Apigee, Azul Zing, Actuate BIRT reporting, Chef, Splunk, Rest-Assured, SoapUI, Dynatrace, and EnterpriseDB. In addition, Rohit has developed lambda architecture solutions using Apache Spark, Cassandra, and Camel for real-time analytics and integration projects.

Rohit has done MBA from Babson College in Corporate Entrepreneurship, Masters in Computer Science from Boston University and Harvard University. Rohit is a regular speaker at No Fluff Just Stuff, UberConf, RichWeb, GIDS, and other international conferences.

Rohit loves to connect on http://www.productivecloudinnovation.com.
http://linkedin.com/in/rohit-bhardwaj-cloud or using Twitter at rbhardwaj1.

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