deadphoenix retweeted
Backend Skills Ranked by Importance π―
π’ GraphQL Federation - Nice to Know
π’ gRPC & Protobuf - Nice to Know
π’ Event Sourcing & CQRS - Nice to Know
π’ Service Mesh Basics - Nice to Know
π’ WebSockets & SSE - Nice to Know
π΅ Caching (Redis) - Useful
π΅ Message Queues - Useful
π΅ Docker & Containers - Useful
π΅ CI/CD Pipelines - Useful
π΅ Rate Limiting - Useful
π₯ Database Indexing - Important
π₯ Logging & Monitoring - Important
π₯ Writing Automated Tests - Important
π₯ Error Handling & Retries - Important
π₯ REST API Design - Important
π¨ SQL & Data Modeling - Essential
π¨ Authentication & Authorization - Essential
π¨ Input Validation & Security - Essential
π¨ HTTP & Networking Fundamentals - Essential
π¨ Git & Version Control - Essential
Which one would you move up or down? π
deadphoenix retweeted
Caching & Redis - Ultimate Roadmap (BOOKMARK NOW)!
π’ 01 Caching Foundations
πΉ Why Caching Works (Latency vs Load)
πΉ Cache Hit, Miss & Hit Ratio
πΉ Where to Cache: Browser, CDN, App, DB
πΉ What Is Safe to Cache
πΉ Cache Cost vs Complexity
π 02 HTTP & CDN Caching
πΉ Cache-Control, ETag & Expires
πΉ Conditional Requests (304)
πΉ CDN Edge Caching
πΉ Stale-While-Revalidate
πΉ Cache Busting & Versioned Assets
π§ 03 Caching Patterns
πΉ Cache-Aside (Lazy Loading)
πΉ Read-Through & Write-Through
πΉ Write-Behind (Write-Back)
πΉ Refresh-Ahead
πΉ Choosing the Right Pattern
β‘ 04 Redis Fundamentals
πΉ In-Memory Data Store Basics
πΉ Strings, Hashes & Lists
πΉ Sets & Sorted Sets
πΉ Keys, TTL & Expiration
πΉ Redis CLI & Client Libraries
π§± 05 Advanced Redis Data Types
πΉ Streams
πΉ Pub/Sub
πΉ Bitmaps & HyperLogLog
πΉ Geospatial Indexes
πΉ Lua Scripts & Transactions
ποΈ 06 Eviction & Invalidation
πΉ TTL Strategies
πΉ LRU, LFU & maxmemory Policies
πΉ Cache Invalidation Strategies
πΉ Event-Driven Invalidation
πΉ Versioned Keys & Tags
π₯ 07 Cache Failure Modes
πΉ Cache Stampede (Thundering Herd)
πΉ Cache Penetration & Avalanche
πΉ Hot Keys
πΉ Request Coalescing & Locks
πΉ Negative Caching
π 08 Real-World Use Cases
πΉ Session Storage
πΉ Rate Limiting
πΉ Leaderboards & Counters
πΉ Job Queues & Background Workers
πΉ Distributed Locks
ποΈ 09 Scaling Redis
πΉ Persistence: RDB vs AOF
πΉ Replication & Failover
πΉ Redis Sentinel
πΉ Redis Cluster & Sharding
πΉ Consistent Hashing
π 10 Performance & Observability
πΉ Memory Optimization
πΉ Pipelining & Batching
πΉ SLOWLOG & Latency Monitoring
πΉ Hit Ratio Dashboards
πΉ Benchmarking & Load Testing
π‘οΈ 11 Security & Operations
πΉ Auth, ACLs & TLS
πΉ Network Isolation
πΉ Backups & Restore
πΉ Managed Redis (ElastiCache, Upstash)
πΉ Redis vs Memcached vs Valkey
π₯ 12 Production Caching
πΉ Multi-Layer Cache Architecture
πΉ Consistency Trade-offs
πΉ Cache Warming
πΉ Capacity Planning & Cost
πΉ Backend β Performance Engineer Path
Cache smartly, cut latency & scale without melting your database.
deadphoenix retweeted

Mansi π©βπ»@MansiCodez2h
India
IndiaConnected via India Android AppAccount-level information, not a live location or per-post device.
Most developers learn Kubernetes too early.
Before Kubernetes, understand:
β Processes
β Threads
β Networking
β HTTP
β Containers
β Linux
β Distributed systems
Otherwise you're just memorizing commands.
deadphoenix retweeted
Elon Musk again repeats that money would become useless in the future.
On the same note, he is expecting a $100 trillion valuation for his companies in the next 10 years, while owning more than one third of the stake, with a majority of the controlling voting shares.
Follow what people do, not what they say.
deadphoenix retweeted
FORGET TOY PROJECTS FOR A MOMENT
These 7 GitHub repositories can help you understand how real engineering systems are built.
1. Kubernetes github.com/kubernetes/kubernβ¦
2. Prometheus github.com/prometheus/prometβ¦
3. Cilium
github.com/cilium/cilium
4. Envoy
github.com/envoyproxy/envoy
5. Backstage github.com/backstage/backstaβ¦
6. Argo CD
github.com/argoproj/argo-cd
7. OpenTelemetry Collector
github.com/open-telemetry/opβ¦
Here's the trick:
Don't try to understand the entire codebase.
Pick one component, trace how a request flows through it, and follow the code.
Reading production code is a skill worth developing.
deadphoenix retweeted
Production Bugs Ranked by Debugging Difficulty π
π’ Typo in an Env Variable Name - Obvious
π’ Missing Null Check - Obvious
π’ Wrong API Endpoint URL - Obvious
π’ Expired SSL Certificate - Obvious
π’ Forgotten Database Migration - Obvious
π‘ Off-by-One Pagination Error - Tricky
π‘ Timezone & DST Bugs - Tricky
π‘ CORS Misconfiguration - Tricky
π‘ N+1 Query Slowdowns - Tricky
π‘ Stale Cache Serving Old Data - Tricky
π₯ Memory Leak After 3 Days Uptime - Brutal
π₯ Database Deadlocks Under Load - Brutal
π₯ Connection Pool Exhaustion - Brutal
π₯ Async Race Conditions - Brutal
π₯ Flaky Tests Only in CI - Brutal
π Intermittent Bug That Vanishes in Debug Mode - βWorks on My Machineβ
π Clock Drift Across Distributed Nodes - βWorks on My Machineβ
π Heisenbug in Multi-Threaded Code - βWorks on My Machineβ
π Data Corruption From Partial Writes - βWorks on My Machineβ
π Bug Only Reproducible in Prod Traffic - βWorks on My Machineβ
Which bug cost you the most sleep? π
deadphoenix retweeted
AI Infrastructure for DevOps Engineers: The Ultimate Learning Roadmap
βββ 01 Linux & Systems Fundamentals
β βββ Linux, Bash, Python & Git
β βββ Processes, Memory, CPU & GPU Basics
β βββ Networking, DNS, TLS & Load Balancing
β
βββ 02 AI & LLM Fundamentals
β βββ LLMs, Transformers, Tokens & Embeddings
β βββ Training vs Inference
β βββ Model Sizes, Context Windows & GPU Requirements
β
βββ 03 GPU Infrastructure
β βββ NVIDIA GPUs, CUDA & GPU Drivers
β βββ VRAM, GPU Utilization & Memory Bandwidth
β βββ GPU Monitoring, Scheduling & Capacity Planning
β
βββ 04 Containers for AI Workloads
β βββ Docker, Container Images & Registries
β βββ NVIDIA Container Toolkit
β βββ GPU-Enabled Containers & Runtime Configuration
β
βββ 05 Kubernetes for AI
β βββ GPU Nodes, Device Plugins & Resource Requests
β βββ Node Pools, Taints, Tolerations & Scheduling
β βββ Kueue, KubeRay & Distributed AI Workloads
β
βββ 06 Cloud AI Infrastructure
β βββ AWS, Azure & GCP GPU Instances
β βββ VPCs, IAM, Private Networking & Storage
β βββ GPU Clusters, Autoscaling & High Availability
β
βββ 07 LLM Serving & Inference
β βββ Deploy Models with vLLM or NVIDIA Triton
β βββ APIs, Batching, Streaming & Model Endpoints
β βββ Scaling, Load Balancing & Health Checks
β
βββ 08 AI Infrastructure as Code
β βββ Terraform for GPU Infrastructure
β βββ Ansible for Host & GPU Configuration
β βββ Reusable Modules, Secrets & Environment Management
β
βββ 09 CI/CD for AI Systems
β βββ GitHub Actions, Jenkins & GitOps
β βββ Automated Model Deployment & Image Builds
β βββ Versioning, Rollbacks & Release Strategies
β
βββ 10 AI Platform Engineering
β βββ Self-Service AI Environments
β βββ Model APIs, Developer Portals & Shared Services
β βββ Multi-Tenancy, Resource Quotas & Isolation
β
βββ 11 AI Observability & SRE
β βββ Prometheus, Grafana & OpenTelemetry
β βββ GPU Metrics, Latency, Throughput & Token Usage
β βββ SLOs, Alerting, Incident Response & Capacity Planning
β
βββ 12 AI Security & FinOps
β βββ IAM, Secrets, Network Policies & Model Access
β βββ Container Security, Supply Chain & Data Protection
β βββ GPU Cost Optimization, Quotas & Scale-to-Zero
β
βββ 13 Hands-On Projects
βββ Deploy an LLM API using Docker and vLLM
βββ Run GPU Workloads on Kubernetes
βββ Build an AI Infrastructure CI/CD Pipeline
βββ Deploy a Monitored, Secure & Cost-Optimized AI Platform
AI infrastructure isn't just about deploying models.
It's about building the platform that makes AI reliable, scalable, secure and cost-efficient.
Save this roadmap.
Learn one layer at a time. Automate everything you can. Build real projects.
The goal isn't just to become a DevOps Engineer who uses AI. It's to become the engineer who can run AI in production.
deadphoenix retweeted
Want to Become a Gold-Tier AWS Cloud/DevOps Engineer?
Build These 13 AWS Projects (with Architectures)βοΈπ
medium.com/aws-in-plain-englβ¦
deadphoenix retweeted
Amazon system design interview:
A product has 10,000 units in stock. One million users try to buy it in 30 seconds.
Design A: Database transactions with row-level locking.
Design B: Redis-based inventory reservation.
Design C: Queue-based purchase processing.
How would you prevent overselling without making checkout unbearably slow?
deadphoenix retweeted
Tech professionals moving from the US back to India:
- 2023: 7,200
- 2024: 9,800
- 2025: 15,100
- 2026: 12,700, and that's only till September
About 14,500 still moved the other way this year.
What returnees are running into:
- pay at 25% to 33% of their US salary, for many
- overseas experience alone isn't the edge it was
- demand is for AI, ML, data, cloud and security skills
Coming back isn't the hard part.
Coming back with a skill India is short of is.
deadphoenix retweeted
A man chases meaning, systems, structures.
A woman chases experience, sensation, and connection.
Letβs be honest:
women donβt follow ideologiesβ they follow men who hold them.
Women are not drawn to philosophies; they are drawn to power, presence, and polarity.
She doesnβt love communism, capitalism, religion, or atheism.
She loves the man who speaks to them with conviction.
- If heβs a communist, she becomes one.
- If heβs a capitalist, suddenly sheβs quoting Adam Smith.
- If heβs a yogi, sheβs chanting mantras.
- If heβs a nihilist, sheβs reading Nietzsche on Instagram stories.
Not because she believesβ
But because she wants to belong to the one who does.
βShe only loves what her love lovesβand nothing else.β
This is the brutal essence of feminine nature.
If her man loves God, sheβll pretend to worship.
If her man whom she love hates certain ideologies, sheβll hate her too.
She doesnβt care for flags, blood, or heritage.
She mirrors the object of her emotional investment.
deadphoenix retweeted

Hindutva Knight@HPhobiaWatchOct 20
India
IndiaConnected via India Android AppAccount-level information, not a live location or per-post device.
This is cool use of AI
Happy Dussehra
deadphoenix retweeted
YES ! Big NO to Arrange Marriage
I can fully relate to this reel as I have seen something ditto in my extended family
Very rich yet they claim that we don't have maid culture at a home and will never have it
Even they don't allow daughter in laws to use washing machine & and few yrs back when one of the DIL got COVID, they literally left her on her own to survive
Even the husband is so Miser, that he hardly spent rs 20... Never ever saw their children's having dry fruits.
They only believe in saving and depositing money in the bank account.
And if you look at 4 kids in their family you will clearly see 3 are anemic
deadphoenix retweeted
IIT Rank 1 by caste[1960-2022]
1960 - Kayastha
1961 - Brahmin
1962 - Brahmin
1963 - Brahmin
1964 - Brahmin
1965 - Brahmin
1966 - Baniya
1967 - Brahmin
1968 - Brahmin
1969 - Brahmin
1970 - Baniya
1971 - Brahmin
1972 - Brahmin
1973 - Karmakar
1/4
deadphoenix retweeted
If you learn AI Agent Engineering, you will never be unemployed again.
I'd blindly follow these 12 stages.
STAGE 01 β Agent Architecture & State Machines
β³ Learn: DAGs, LangGraph, Temporal, checkpointing.
β³ Build: An agent that loops, branches, pauses and resumes.
β³ Why: Chat loops break. Production agents need durable state.
STAGE 02 β Tool Use & MCP
β³ Learn: Function calling, JSON-RPC, Pydantic, MCP, OAuth.
β³ Build: A secure MCP server with read-only Postgres access.
β³ Why: Agents need standardized tools, not fragile wrappers.
STAGE 03 β Trajectory Evals & Observability
β³ Learn: Tracing, golden datasets, step-level grading, LLM judges.
β³ Build: CI that evaluates 50 scenarios, tool paths and failures.
β³ Why: Correct outputs can hide dangerous execution paths.
STAGE 04 β Memory & Context Engineering
β³ Learn: Working, episodic, semantic memory, token budgets.
β³ Build: An agent that compresses 50 turns into useful memory.
β³ Why: Unlimited context doesn't mean better reasoning.
STAGE 05 β Agent Security & Guardrails
β³ Learn: Prompt injection, tool poisoning, least privilege.
β³ Build: A security layer blocking unauthorized agent actions.
β³ Why: One compromised agent can threaten the entire system.
STAGE 06 β Sandboxed Execution
β³ Learn: E2B, gVisor, Docker, network isolation.
β³ Build: An agent that executes Python inside a secure sandbox.
β³ Why: Never give an LLM unrestricted host access.
STAGE 07 β Human-in-the-Loop
β³ Learn: Async approvals, webhooks, durable pauses, audit logs.
β³ Build: A $10k invoice agent that waits for Slack approval.
β³ Why: High-stakes actions need human accountability.
STAGE 08 β Computer Use & GUI Automation
β³ Learn: DOM parsing, screenshots, Playwright, visual grounding.
β³ Build: An agent that navigates a portal and downloads CSVs.
β³ Why: Legacy software doesn't always have APIs.
STAGE 09 β Self-Correction Loops
β³ Learn: Validators, tracebacks, bounded retries, error analysis.
β³ Build: A coding agent that fixes errors and retries up to 3 times.
β³ Why: Reliable agents recover instead of giving up.
STAGE 10 β Graceful Degradation
β³ Learn: Circuit breakers, timeouts, browser fallbacks, model routing.
β³ Build: An agent that uses browser automation when APIs fail.
β³ Why: Production systems break. Reliable agents adapt.
STAGE 11 β Multi-Agent Orchestration & A2A
β³ Learn: A2A protocols, typed handoffs, agent topologies.
β³ Build: Researcher + Coder + Reviewer with typed A2A handoffs.
β³ Why: Poor handoffs turn collaboration into chaos.
STAGE 12 β Public Teardowns & Portfolio
β³ Learn: ADRs, cost-per-task, p95 latency, benchmarking.
β³ Build: A public teardown showing costs, failures and evals.
β³ Why: Real engineering beats another LangChain demo.
The goal isn't to build an agent that works once.
It's to build one that works reliably, securely and at scale in production.
π Bookmark this + send it to someone learning AI agents.


















