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37 resultsCI/CD Pipeline Design — From Commit to Production
Stages, gates, deployment strategies, and keeping pipelines fast.
Graph Databases — When to Use Neo4j Over Relational
Nodes, edges, Cypher queries, and use cases where graph beats SQL.
Customer telephony AI with live agent handoff
Real-time STT/LLM/TTS pipeline; cut hold time by 41%.
REST API design principles we follow
Versioning, error formats, pagination, and auth patterns used across all Intersysop-built APIs.
Privacy-First Data Design — PII Handling Patterns
Tokenisation, pseudonymisation, encryption at rest, and right-to-deletion workflows.
Data Warehouse Modelling — Star Schema and Dimensional Design
Facts, dimensions, slowly changing dimensions, and why modelling choices matter for query performance.
Introduction to Data Pipelines
What a data pipeline is, the core stages, and when to build vs buy.
PostgreSQL Performance Tuning Fundamentals
Indexing strategy, EXPLAIN ANALYZE, vacuum, and configuration settings that matter most.
JWT Authentication — Implementation and Security Patterns
Access tokens, refresh tokens, rotation, revocation, and common mistakes.
SQL Query Optimisation — Indexes, Execution Plans, and N+1
Practical techniques for making slow queries fast.
How to Upgrade RAM in a Desktop or Laptop
Find the right RAM, install it correctly, and verify it is running at rated speed.
Snowflake Best Practices for Cost and Performance
Virtual warehouses, clustering, query optimization, and controlling spend.
Secrets Management for Data Platforms
HashiCorp Vault, AWS Secrets Manager, and patterns for rotating credentials safely.
Clean Install Windows 10 or 11 from USB
Download, create install media, and do a clean install step by step.
Fix Windows Update Stuck or Failing
Clear the update cache, reset services, and force updates to complete.
Keyboard Not Working — Diagnosis and Fix
Covers USB, PS/2, wireless, and laptop keyboards that stop responding.
Amazon Redshift — Architecture and Query Optimization
Distribution styles, sort keys, VACUUM, ANALYZE, and WLM tuning.
Distributed Tracing — Propagating Context Across Services
Trace context propagation, sampling strategies, and analysing traces.
API Gateway — Responsibilities and Implementation Patterns
Authentication, rate limiting, routing, request aggregation, and when not to use a gateway.
Implementing Search — From Basic SQL to Elasticsearch
Full-text search progression from LIKE queries to dedicated search engines.
API Idempotency — Safe Retries for Mutations
Idempotency keys, implementation, and which HTTP methods are idempotent by definition.
Designing and Publishing API Client SDKs
Auto-generation vs handwritten, retry logic, versioning, and developer experience.
OAuth 2.0 and OIDC — Implementing Secure Third-Party Auth
Authorization code flow, PKCE, scopes, and integrating with identity providers.
Background Job Queue Design
Idempotency, retries, dead letter queues, and job observability.
HTTP Caching Strategies for APIs and Web Applications
Cache-Control headers, ETags, CDN caching, and cache invalidation.
CDN and Edge Caching Strategy
Origin offload, cache key design, purging, and choosing a CDN.
API Pagination — Cursor, Offset, and Keyset Patterns
When each method works, performance tradeoffs, and implementation details.
Elasticsearch Indexing Strategy and Performance
Mapping, sharding, bulk indexing, and query optimization for Elasticsearch.
Event Sourcing and CQRS — Practical Implementation
Event store design, projection rebuilding, and operational realities.
Health Check Endpoints — Readiness, Liveness, and Startup
Implement correct health endpoints so orchestrators route traffic and restart containers appropriately.
Implementing Rate Limiting in APIs
Token bucket, sliding window, fixed window — algorithms and implementation patterns.
Redis Caching Patterns for Production Applications
Cache-aside, write-through, TTL strategy, and cache invalidation approaches.
Service Mesh — Istio and Linkerd for Microservices
mTLS, traffic management, observability, and the operational cost of a service mesh.
Laptop Touchpad Not Working
Enable, update, and repair touchpad drivers on Windows laptops.
Fix Windows Activation Errors
Resolve error codes 0xC004F074, 0x803F7001, and activation issues after hardware changes.
Designing a Reliable Webhook System
Delivery guarantees, signature verification, retry logic, and consumer best practices.
Convert a Windows 10 Boot Disk from Legacy BIOS (MBR) to UEFI (GPT)
Step-by-step guide to switching an existing Windows 10 installation from MBR/Legacy BIOS boot to GPT/UEFI — without reinstalling Windows — using Microsoft's bu…