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OpenStem
@openstem · Joined Jul 2026
7420 public items8 groups
Collection2 items
01K8s Scheduling, Operators & CRDs
02Service Mesh & GitOps
Software · L4 · Docker & Kubernetes
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Software · L4 · Docker & KubernetesCollection2 items
01Test Architecture & Test Doubles
02Determinism, Flakiness & CI Scale
Software · L4 · Testing
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Software · L4 · TestingCollection2 items
01Anti-Patterns & Pattern Trade-offs
02Architectural & Concurrency Patterns
Software · L4 · Design Patterns
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Software · L4 · Design PatternsCollection2 items
01IoC Container, Bean Lifecycle & AOP
02Transactions, Persistence & Reactive
Software · L4 · Spring Boot
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Software · L4 · Spring BootCollection2 items
01Dart VM, Isolates & Async Internals
02Type System, Null Safety & Compilation
Software · L4 · Dart
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Software · L4 · DartCollection2 items
01Rendering Pipeline: Widget / Element / RenderObject
02Performance, Slivers & Custom Rendering
Software · L4 · Flutter
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Software · L4 · FlutterCollection2 items
01Rendering Architecture: RSC, Streaming & Caching
02Routing, Middleware & Edge Runtime
Software · L4 · Next.js
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Software · L4 · Next.jsCollection2 items
01DI Container, Modules & Execution Context
02Interceptors, Guards, Pipes & Microservices
Software · L4 · NestJS
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Software · L4 · NestJSCollection2 items
01Storage Engine, Indexing & Query Internals
02Replication, Sharding & Consistency
Software · L4 · MongoDB
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Software · L4 · MongoDBCollection2 items
01Internals & MVCC
02Replication & Scaling
Software · L4 · PostgreSQL
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Software · L4 · PostgreSQLCollection2 items
01Well-Architected & Resilience
02Multi-Account & Advanced Networking
Software · L4 · AWS
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Software · L4 · AWSCollection2 items
01IAM, Resource Hierarchy & Security
02Networking, Load Balancing & Reliability
Software · L4 · Google Cloud
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Software · L4 · Google CloudCollection2 items
01State, Internals & Drift
02Module Design, Providers & Scale
Software · L4 · Terraform
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Software · L4 · TerraformCollection4 items
01Applied Cryptography for Engineers
02Software · L4 · Applied Cryptography for Engineers
03Software · L4 · TLS 1.3 handshake
+1 moreSoftware · L4 · Applied Cryptography
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Software · L4 · Applied CryptographyCollection4 items
01Data Partitioning & Replication at Scale
02Software · L4 · Data Partitioning & Replication at Scale
03Software · L4 · Sharded write path with leader-follower replication
+1 moreSoftware · L4 · Data Partitioning & Replication
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Software · L4 · Data Partitioning & ReplicationCollection4 items
01Site Reliability Engineering
02Software · L4 · Site Reliability Engineering practice
03Software · L4 · Incident lifecycle
+1 moreSoftware · L4 · Site Reliability Engineering
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Software · L4 · Site Reliability EngineeringCollection4 items
01Distributed Systems Engineering
02Software · L4 · Distributed Systems Engineering
03Software · L4 · Quorum Write/Read and Leader Fencing
+1 moreSoftware · L4 · Distributed Systems Engineering
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Software · L4 · Distributed Systems EngineeringCollection4 items
01Microservices Architecture & Resilience Patterns
02Software · L4 · Microservices Architecture & Resilience Patterns
03Software · L4 · Saga Execution With Compensation
+1 moreSoftware · L4 · Microservices Architecture & Resilience Patterns
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Software · L4 · Microservices Architecture & Resilience PatternsCollection4 items
01Event Streaming & Kafka
02Software · L4 · Event Streaming & Kafka
03Software · L4 · Consumer Group Partition Assignment and Rebalance
+1 moreSoftware · L4 · Event Streaming & Kafka
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Software · L4 · Event Streaming & KafkaCollection4 items
01Observability: Metrics, Logs, and Traces
02Software · L4 · Observability: Metrics, Logs, and Traces
03Software · L4 · From Alert to Root Cause Across the Three Pillars
+1 moreSoftware · L4 · Observability: Metrics, Logs, and Traces
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Software · L4 · Observability: Metrics, Logs, and TracesCollection9 items
01Software · L5 · Complexity Theory
02Software · L5 · Distributed Systems Theory
03Software · L5 · Type Theory and the λ-Calculus
+6 moreSoftware · L5 · Theory & Distributed Systems
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Software · L5 · Theory & Distributed SystemsCollection4 items
01Software · L5 · Automata Theory & Formal Languages
02Software · L5 · Automata Theory & Formal Languages
03Software · L5 · Chomsky Hierarchy
+1 moreSoftware · L5 · Automata Theory & Formal Languages
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Software · L5 · Automata Theory & Formal LanguagesCollection4 items
01Software · L5 · Process Calculi & Concurrency Theory
02Software · L5 · Process Calculi: CSP, the π-Calculus, and Behavioural Equivalence
03Software · L5 · Process Calculi Landscape
+1 moreSoftware · L5 · Process Calculi & Concurrency
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Software · L5 · Process Calculi & ConcurrencyCollection4 items
01Software · L5 · Computability Theory
02Software · L5 · Computability Theory
03Software · L5 · Decidability Hierarchy
+1 moreSoftware · L5 · Computability Theory
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Software · L5 · Computability TheoryCollection4 items
01Software · L5 · Cryptographic Foundations
02Software · L5 · Theoretical Cryptography: Hardness, Pseudorandomness, and Proof
03Software · L5 · The Cryptographic Primitive Hierarchy
+1 moreSoftware · L5 · Cryptographic Foundations
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Software · L5 · Cryptographic FoundationsCollection4 items
01Software · L5 · Database Theory & Query Optimization
02Software · L5 · Database Theory: Relational Algebra, Serializability, and Query Optimization
03Software · L5 · From SQL Query to Physical Plan
+1 moreSoftware · L5 · Database Theory & Query Optimization
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Software · L5 · Database Theory & Query OptimizationCollection4 items
01Software · L5 · Distributed Machine Learning Systems
02Software · L5 · Systems for Distributed Machine Learning
03Software · L5 · Distributed Training Architectures
+1 moreSoftware · L5 · Distributed Machine Learning Systems
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Software · L5 · Distributed Machine Learning SystemsCollection4 items
01Software · L5 · Programming Language Semantics
02Software · L5 · Programming Language Semantics
03Software · L5 · Semantics Styles and Type Soundness
+1 moreSoftware · L5 · Programming Language Semantics
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Software · L5 · Programming Language SemanticsCollection4 items
01Software · L5 · Program Analysis & Abstract Interpretation
02Software · L5 · Program Analysis & Abstract Interpretation
03Software · L5 · Fixpoint Iteration With Widening
+1 moreSoftware · L5 · Program Analysis & Abstract Interpretation
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Software · L5 · Program Analysis & Abstract InterpretationCollection4 items
01Software · L5 · Hoare Logic & Program Verification
02Software · L5 · Hoare Logic & Program Verification
03Software · L5 · Proving a While Loop Correct
+1 moreSoftware · L5 · Hoare Logic & Program Verification
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Software · L5 · Hoare Logic & Program Verification