Kota Moses
1.2K posts


AWS Learning Roadmap 2025 ☁️
1️⃣ Start: Learn the basics
→ EC2 = compute
→ S3 = storage
→ IAM = security
→ RDS = database
2️⃣ Build: Do hands-on projects
→ Host a site
→ Deploy an app
→ Use free-tier services
3️⃣ Certify:
🎓 Cloud Practitioner (CLF-C02)
⚙️ Solutions Architect (SAA-C03)
4️⃣ Deep Dive:
Networking • Monitoring • Serverless • Security
5️⃣ Specialize:
AI/ML • DevOps • Data • Architect
💡 Don’t just study - build while you learn.
🚀 Grab my Free AWS Certification Roadmap
⬇️ Comment ROADMAP to get it.
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If your DevOps preparation is only about tools… you're preparing for the wrong job.
Most engineers can explain Docker.
Very few can answer this:
“Your Kubernetes node crashes during a deployment and half the pods are stuck.
What’s your recovery plan?”
Real DevOps work is about:
• Failure isolation
• RCA thinking
• Infrastructure trade-offs
• Production decision making
That’s why elite companies simulate chaos in interviews.
Not quizzes.
This book breaks down real scenarios from companies like:
Netflix, NVIDIA, Atlassian, GCP, and JioHotstar.
Comment “BOOK” and I’ll send the guide.
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API Design Playbook:
Giveaway Alert!!
• Core API fundamentals.
• Clean & scalable design principles.
• Common patterns used in real world systems.
• Practical concepts for interviews & building projects.
(24 hours only & I won't offer this ever again!)
To get it:
1. Like, Retweet & Follow @systemdesignone
2. Reply "Playbook"
Then I'll DM you the details.

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Kota Moses ретвитнул
Kota Moses ретвитнул

@RupertLowe10 May God be with all of you. Restore the Great Britain
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Kota Moses ретвитнул

Imagine you had to choose your life at age 40:
Option A:
Single. No kids.
$10M net worth.
Travel anywhere. Total freedom.
Quiet house. Quiet holidays.
Option B:
Married. 3 kids.
$1M net worth.
Drive a Toyota. Chaos every morning.
Loud house. Full dinner table.
Be honest, which life are you choosing?
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Kota Moses ретвитнул

System Design becomes EASY when you follow these:
1. Fundamentals
youtube.com/playlist?list=…
2. API Design
youtube.com/watch?v=DQ57zY…
3. Load Balancing
youtube.com/watch?v=xg7Dj2…
4. Message Queues
youtube.com/watch?v=DYFocS…
5. Rate Limiting
youtube.com/watch?v=MIJFyU…
6. Caching
youtube.com/watch?v=1NngTU…
7. Sharding & Partitioning
youtube.com/watch?v=wXvlje…
8. Database Replication
youtube.com/watch?v=oh8GvL…
9. Consistent Hashing
youtube.com/watch?v=vccwdh…
10. CAP Theorem
youtube.com/watch?v=RexrIN…
11. Microservices
youtube.com/watch?v=vTjeDW…
12. Fault Tolerance
youtube.com/watch?v=3Lis4w…
13. Scalability
youtube.com/watch?v=tjubQ9…
14. Event-Driven Architecture
youtube.com/watch?v=Fb_0UO…
15. Service Discovery
youtube.com/watch?v=v4u7m2…

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@DearS_o_n That's exactly what is happening with me right now. Just that age is less by 2hrs
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Kota Moses ретвитнул
Kota Moses ретвитнул

𝗦𝘆𝘀𝘁𝗲𝗺 𝗗𝗲𝘀𝗶𝗴𝗻 𝗥𝗼𝗮𝗱𝗺𝗮𝗽 𝟮𝟬𝟮𝟲
𝟭. 𝗙𝗼𝘂𝗻𝗱𝗮𝘁𝗶𝗼𝗻𝘀
Start by understanding the core principles behind building scalable systems.
🔹 Scalability (Vertical vs Horizontal Scaling)
🔹 Reliability & Fault Tolerance
🔹 High Availability
🔹 Latency vs Throughput
🔹 CAP Theorem
𝟮. 𝗡𝗲𝘁𝘄𝗼𝗿𝗸𝗶𝗻𝗴 & 𝗣𝗿𝗼𝘁𝗼𝗰𝗼𝗹𝘀
Systems communicate over networks, so understanding networking is essential.
🔹 HTTP / HTTPS
🔹 TCP vs UDP
🔹 DNS (Domain Name System)
🔹 Load Balancers (L4 vs L7)
🔹 Reverse Proxies
𝟯. 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀
Data storage design is a key part of system architecture.
🔹 SQL Databases (PostgreSQL, MySQL)
🔹 NoSQL Databases (MongoDB, Cassandra)
🔹 Database Indexing
🔹 Database Replication
🔹 Database Sharding
𝟰. 𝗖𝗮𝗰𝗵𝗶𝗻𝗴
Caching improves system performance and reduces database load.
🔹 In-memory caching (Redis, Memcached)
🔹 Cache Invalidation strategies
🔹 Write-through / Write-back caching
🔹 CDN (Content Delivery Networks)
𝟱. 𝗠𝗲𝘀𝘀𝗮𝗴𝗲 𝗤𝘂𝗲𝘂𝗲𝘀
Queues help build asynchronous and resilient systems.
🔹 Kafka
🔹 RabbitMQ
🔹 Amazon SQS
🔹 Event-driven architectures
𝟲. 𝗠𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲
Break large applications into smaller independent services.
🔹 Service communication (REST, gRPC)
🔹 API Gateway
🔹 Service discovery
🔹 Circuit breakers
𝟳. 𝗖𝗼𝗻𝘁𝗮𝗶𝗻𝗲𝗿𝘀 & 𝗢𝗿𝗰𝗵𝗲𝘀𝘁𝗿𝗮𝘁𝗶𝗼𝗻
Modern distributed systems rely heavily on containers.
🔹 Docker
🔹 Kubernetes
🔹 Container networking
🔹 Service mesh (Istio, Linkerd)
𝟴. 𝗢𝗯𝘀𝗲𝗿𝘃𝗮𝗯𝗶𝗹𝗶𝘁𝘆
Monitor systems to detect failures and performance issues.
🔹 Logging (ELK Stack)
🔹 Monitoring (Prometheus, Grafana)
🔹 Distributed tracing (Jaeger, OpenTelemetry)
🔹 Alerting systems
𝟵. 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆
Secure systems against threats and vulnerabilities.
🔹 Authentication & Authorization
🔹 OAuth / JWT
🔹 Encryption (TLS, HTTPS)
🔹 Rate limiting & DDoS protection
𝟭𝟬. 𝗗𝗮𝘁𝗮 𝗣𝗿𝗼𝗰𝗲𝘀𝘀𝗶𝗻𝗴
Large-scale systems handle massive data pipelines.
🔹 Batch processing
🔹 Stream processing (Kafka Streams, Flink)
🔹 Data pipelines
🔹 Event sourcing
𝟭𝟭. 𝗗𝗶𝘀𝘁𝗿𝗶𝗯𝘂𝘁𝗲𝗱 𝗦𝘆𝘀𝘁𝗲𝗺 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀
Understand proven design patterns used in large systems.
🔹 Leader election
🔹 Consensus algorithms (Raft, Paxos)
🔹 Distributed locks
🔹 Idempotency
𝟭𝟮. 𝗥𝗲𝗮𝗹-𝗪𝗼𝗿𝗹𝗱 𝗦𝘆𝘀𝘁𝗲𝗺𝘀
Apply your knowledge by designing real-world platforms.
🔹 Design Twitter / X
🔹 Design WhatsApp messaging system
🔹 Design URL shortener (TinyURL)
🔹 Design YouTube video streaming system
🔹 Design Uber ride matching system
Learn System Design with deeper explanations, diagrams, and real-world architectures here:
codewithdhanian.gumroad.com/l/ntmcf

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Kota Moses ретвитнул

The Fastest way to learn Python is to build real Projects👇
📦 Beginner
• Build your own developer CLI tool
• Build your own `.env` configuration loader
• Build a log parser for large application logs
• Build a simple key-value store for local caching
⚙️ Intermediate
• Build a small HTTP API server
• Build an HTTP client to interact with external APIs
• Build an in-memory caching system (LRU)
• Build a rate limiter for APIs
• Build a job scheduler (cron-like task runner)
🧠 Advanced
• Build a background job processor for async tasks
• Build a WebSocket server for real-time updates
• Build a log analysis tool for applications
• Build a metrics collector for services
• Build a service health monitoring tool
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