Search results
166 resultsHow we run a one-week research spike
The exact process we use to de-risk a technical bet in five days.
Diagnosing and Fixing Blue Screen of Death (BSOD)
How to read stop codes, find the offending driver or hardware, and permanently fix Windows BSODs.
Windows Won't Boot — Recovery and Repair Options
From Startup Repair to bootrec commands to reinstall — exhaustive boot failure recovery.
Hard Drive Clicking — Data Recovery Options
What clicking means, what NOT to do, and your recovery options from DIY to professional.
Ransomware Recovery — What To Do Right Now
Immediate response steps, identification, and recovery without paying.
CI/CD Pipeline Design — From Commit to Production
Stages, gates, deployment strategies, and keeping pipelines fast.
Which LLMs and models do you work with?
We are model-agnostic and select based on your requirements.
Introduction to Data Pipelines
What a data pipeline is, the core stages, and when to build vs buy.
REST API Versioning Strategies
URL path, header, and query-param versioning compared with real-world tradeoffs.
Applied AI & ML — Service Overview
Everything included in our Applied AI engagements: RAG, agents, fine-tuning, evals, and guardrails.
PC Powers On But No Display — No POST Diagnosis
Systematic approach when a machine shows power LEDs but a black screen.
Graph Databases — When to Use Neo4j Over Relational
Nodes, edges, Cypher queries, and use cases where graph beats SQL.
What is Retrieval-Augmented Generation (RAG)?
A plain-English explanation of RAG: why it beats pure LLM memory for production knowledge systems.
Database Schema Migration Strategies
Expand-contract pattern, zero-downtime migrations, and tooling.
Observability — Logs, Metrics, and Traces
Implementing the three pillars with OpenTelemetry and making them actionable.
Diagnostic RAG for heavy equipment
Indexed 4M+ pages across PDFs & manuals; latency < 400ms; 32% fewer escalations.
Apache Kafka — Core Concepts and When to Use It
Topics, partitions, consumer groups, and the use cases where Kafka excels.
Data Governance — Principles and Practical Implementation
Ownership, cataloguing, lineage tracking, and access control at scale.
Customer telephony AI with live agent handoff
Real-time STT/LLM/TTS pipeline; cut hold time by 41%.
Data Warehouse Modelling — Star Schema and Dimensional Design
Facts, dimensions, slowly changing dimensions, and why modelling choices matter for query performance.
PostgreSQL Performance Tuning Fundamentals
Indexing strategy, EXPLAIN ANALYZE, vacuum, and configuration settings that matter most.
Apache Iceberg — The Open Table Format Explained
Snapshots, schema evolution, partition evolution, time travel, and compaction.
JWT Authentication — Implementation and Security Patterns
Access tokens, refresh tokens, rotation, revocation, and common mistakes.
REST API design principles we follow
Versioning, error formats, pagination, and auth patterns used across all Intersysop-built APIs.
Multi-Tenancy Patterns — Database-per-Tenant, Schema-per-Tenant, and Row-Level
Tradeoffs for SaaS data isolation, compliance, and operational complexity.
Complete Malware Removal Guide
Step-by-step malware removal without paying for a technician.
Choosing a vector database: pgvector vs Pinecone vs Weaviate
A practical comparison across dimensions that matter for production RAG systems.
Building a Data Quality Framework
Dimensions of data quality, validation layers, and monitoring in production pipelines.
SQL Query Optimisation — Indexes, Execution Plans, and N+1
Practical techniques for making slow queries fast.
Progressive Delivery — Feature Flags, Canary, and Dark Launching
Techniques for releasing software confidently at any scale.
Privacy-First Data Design — PII Handling Patterns
Tokenisation, pseudonymisation, encryption at rest, and right-to-deletion workflows.
Resilience Patterns — Circuit Breaker, Retry, Bulkhead, and Timeout
Prevent cascading failures with proven resilience patterns.
How to Update Your BIOS Safely
When to update, how to do it without bricking the board, and recovery options.
Fix 100% CPU Usage in Windows
Identify what is consuming CPU and permanently resolve the issue.
Schema Registry and Avro for Kafka Data Contracts
Why schema management matters for streaming pipelines and how to implement it.
Distributed Tracing — Propagating Context Across Services
Trace context propagation, sampling strategies, and analysing traces.
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…
How to Diagnose a Failing Power Supply
Testing PSU output, identifying failure symptoms, and safely replacing it.
Fix Wi-Fi Not Connecting or Dropping
Covering driver issues, IP conflicts, DNS failures, and adapter resets.
Set Up Dual Monitors in Windows
Connect, configure, and troubleshoot a two-monitor setup.
Diagnosing a Dead or Failing Motherboard
How to rule out other components before concluding the motherboard is at fault.
Health Check Endpoints — Readiness, Liveness, and Startup
Implement correct health endpoints so orchestrators route traffic and restart containers appropriately.
Do you sign NDAs?
Standard policy on confidentiality and IP.
Fix Slow Windows 10/11 Startup
Step-by-step methods to cut boot time from minutes to seconds.
Laptop Battery Not Charging — Diagnosis and Fix
Plugged in but not charging? Work through software, driver, and hardware causes.
Fix Windows Update Stuck or Failing
Clear the update cache, reset services, and force updates to complete.
New SSD Not Showing Up in Windows
Initialize, partition, and format a new SSD that does not appear in File Explorer.
PC Won't Turn On — Zero Power Diagnosis
Methodical troubleshooting when pressing the power button does nothing at all.
How long does a typical project take?
Timeline expectations from kick-off to launch.
Recover Deleted Files Without Paid Software
Use Recuva, TestDisk, and Shadow Copies to get files back.
Fix Black Screen After Windows Login
Desktop does not appear after entering password — causes and fixes.
Delta Lake — ACID Transactions for Your Data Lake
Transaction log, upserts, schema enforcement, and time travel on S3.
Reset a Forgotten Windows 10/11 Password
Methods for local accounts and Microsoft accounts, without data loss.
External Hard Drive Not Showing Up
From dead drives to missing drive letters — fix external storage detection issues.
Elasticsearch Indexing Strategy and Performance
Mapping, sharding, bulk indexing, and query optimization for Elasticsearch.
Implementing Data Retention Policies
Legal requirements, technical implementation, and automated deletion workflows.
Trino (formerly PrestoSQL) — Federated SQL Across Data Sources
Architecture, connectors, query federation, and performance tuning.
Event Sourcing and CQRS — Practical Implementation
Event store design, projection rebuilding, and operational realities.
CDN and Edge Caching Strategy
Origin offload, cache key design, purging, and choosing a CDN.
Clone HDD to SSD Without Reinstalling Windows
Use Macrium Reflect Free to do a sector-level clone and swap drives safely.
ETL vs ELT — Which Pattern Should You Use?
Understand the difference between Extract-Transform-Load and Extract-Load-Transform and when each fits.
gRPC Service Design — Protocol Buffers and Production Patterns
Proto file design, streaming, deadlines, interceptors, and error handling.
Service Mesh — Istio and Linkerd for Microservices
mTLS, traffic management, observability, and the operational cost of a service mesh.
LLM Guardrails: keeping AI outputs safe in production
Techniques for input/output filtering, content policies, and hallucination mitigation.
Can you work with our existing codebase?
Yes — we regularly parachute into production systems.
Keyboard Not Working — Diagnosis and Fix
Covers USB, PS/2, wireless, and laptop keyboards that stop responding.
Fix Laptop Overheating and Thermal Throttling
Clean the vents, replace thermal paste, and tune fan curves to keep laptops running cool.
Fix 100% Disk Usage in Windows 10/11
Resolve the Task Manager showing disk at 100% and system feeling completely frozen.
Container Registry Management and Image Lifecycle
Tagging conventions, vulnerability scanning, retention policies, and registry options.
Clean Install Windows 10 or 11 from USB
Download, create install media, and do a clean install step by step.
Data Observability — Detecting Silent Pipeline Failures
Freshness, volume, distribution, schema, and lineage monitoring for data reliability.
Airflow Best Practices for Production Pipelines
Idempotency, backfilling, SLA misses, and common pitfalls to avoid.
Diagnose Random PC Restarts
Pinpoint whether restarts are caused by overheating, PSU, RAM, or Windows settings.
No Sound in Windows — Complete Fix Guide
Systematic audio troubleshooting from service restart to driver reinstall.
Fix Webcam Not Working in Windows
Get your built-in or USB webcam detected and working in Teams, Zoom, and browsers.
Snowflake Best Practices for Cost and Performance
Virtual warehouses, clustering, query optimization, and controlling spend.
Replace the CMOS Battery (Fixing Date/Time Reset)
How to identify a dead CMOS battery and replace it on desktops and laptops.
Ethernet Not Working — Full Diagnosis
From cable to driver to router — fix a wired connection that shows no activity.
Data Lake vs Data Warehouse vs Lakehouse
Practical comparison of the three architectures and how to choose.
Secrets Management for Data Platforms
HashiCorp Vault, AWS Secrets Manager, and patterns for rotating credentials safely.
Product Engineering — Service Overview
APIs, dashboards, and services delivered with tests, CI/CD, and observability from day one.
Laptop Touchpad Not Working
Enable, update, and repair touchpad drivers on Windows laptops.
Batch vs Streaming Pipelines — Choosing the Right Pattern
Lambda architecture, Kappa architecture, and practical guidance for choosing.
Diagnosing Failing RAM
How to identify bad memory using MemTest86, Windows Memory Diagnostic, and symptoms.
Fix Windows Explorer Crashing or Restarting
Stop the taskbar and File Explorer from randomly crashing.
Disk Partition Management in Windows
Resize, merge, create, and delete partitions using built-in tools and free utilities.
DuckDB — Blazing Fast Local Analytics
When to reach for DuckDB instead of Spark, and how to use it effectively.
Fix Corrupted Windows System Files with SFC and DISM
Step-by-step use of System File Checker and DISM to repair a broken Windows installation.
Microphone Not Working in Windows
Check permissions, devices, and drivers to get your mic recognised.
Extracting Microservices from a Monolith
The strangler fig pattern, identifying seams, and avoiding the distributed monolith.
Replace a Cracked or Dead Laptop Screen
How to source, order, and install a replacement laptop LCD panel.
Fix Monitor or Laptop Screen Flickering
Identify whether flickering is caused by the cable, driver, refresh rate, or hardware.
Fix USB Device Not Recognized
Resolve the "USB device not recognized" error for drives, phones, and peripherals.
How to Upgrade RAM in a Desktop or Laptop
Find the right RAM, install it correctly, and verify it is running at rated speed.
Data Mesh — Principles and Practical Implementation
Domain ownership, data products, self-serve infrastructure, and federated governance.
Fix Windows Stuck on "Preparing to Configure Windows"
Recover from a Windows Update loop that won't complete.
Running Data Workloads on Kubernetes
Spark on K8s, Airflow on K8s, resource requests, and storage patterns.
MongoDB Schema Design Patterns
Embedding vs referencing, the subset pattern, and indexing strategy.
Fine-tuning LLMs: when, why, and how
A practical guide to LoRA, QLoRA, and full fine-tuning for production use cases.
Using CHKDSK to Find and Fix Disk Errors
How to run Check Disk properly, interpret results, and know when to replace the drive.
Getting Started with dbt (data build tool)
Models, tests, documentation, and the dbt workflow for transforming warehouse data.
Change Data Capture (CDC) — Debezium and Log-Based CDC
How CDC works, why it beats polling, and how to implement it with Debezium.
Infrastructure as Code for Data Platforms with Terraform
Managing cloud data infrastructure reproducibly with Terraform.
Feature Stores — Bridging Data Engineering and ML
What a feature store is, online vs offline stores, and when to build vs buy.
Event-Driven Data Architecture Patterns
Event sourcing, CQRS, outbox pattern, and when event-driven beats request/response.
Kubernetes Deployment Patterns for Production Services
Deployments, Services, Ingress, HPA, and resource management.
The Twelve-Factor App — Principles for Modern Services
How the twelve factors apply to real production services today.
Orchestrating Pipelines with Apache Airflow
DAGs, operators, scheduling, and production best practices for Airflow.
GraphQL vs REST — When to Use Each
Comparing query flexibility, over-fetching, tooling, and operational complexity.
Predictive maintenance for fleet management
Time-series models reduced unplanned downtime by 18% across a mixed heavy equipment fleet.
Fix Printer Showing Offline in Windows
Get a printer back online without reinstalling drivers.
Apache Spark — Core Concepts and When to Use It
RDDs, DataFrames, Spark SQL, and the use cases where Spark is the right tool.
Amazon Redshift — Architecture and Query Optimization
Distribution styles, sort keys, VACUUM, ANALYZE, and WLM tuning.
Monitoring and Alerting for Data Pipelines
What to monitor, SLIs/SLOs for data, and building effective alerting.
API Error Handling — Consistent Error Responses
Error format standards, HTTP status code usage, and client-friendly error design.
DORA Metrics — Measuring Engineering Delivery Performance
Deployment frequency, lead time, MTTR, and change failure rate in practice.
Semantic Versioning — MAJOR.MINOR.PATCH in Practice
When to bump each version number and how to communicate breaking changes.
Fixing CPU Overheating — Thermal Paste and Cooler Guide
How to diagnose thermal throttling, replace thermal paste, and improve CPU cooler performance.
Fix Windows Activation Errors
Resolve error codes 0xC004F074, 0x803F7001, and activation issues after hardware changes.
Implementing Data Lineage Tracking
Column-level lineage, tools, and why it is critical for debugging and compliance.
Designing a Reliable Webhook System
Delivery guarantees, signature verification, retry logic, and consumer best practices.
Background Job Queue Design
Idempotency, retries, dead letter queues, and job observability.
Load Testing with k6
Script a realistic load test, interpret results, and find bottlenecks before they find users.
API Documentation Best Practices
What makes documentation useful, tooling, and keeping docs accurate.
Database Connection Pooling — Why It Matters and How to Configure It
Pool sizing, connection lifetime, and debugging pool exhaustion.
GPU Troubleshooting — Artifacts, Crashes, and No Signal
Diagnose and fix graphics card issues from driver corruption to hardware failure.
Serverless Architecture — When Functions Work and When They Don't
Cold starts, event-driven patterns, cost model, and the right use cases.
Implementing Rate Limiting in APIs
Token bucket, sliding window, fixed window — algorithms and implementation patterns.
Idiomatic REST API Design Patterns
Naming conventions, filtering, sorting, sparse fieldsets, and HATEOAS considerations.
Data & Platform — Service Overview
Pipelines, vector stores, governance, and privacy-first data design.
Parquet vs CSV — Why Columnar Storage Matters
How Parquet's columnar format reduces storage costs and speeds up analytical queries.
Designing and Publishing API Client SDKs
Auto-generation vs handwritten, retry logic, versioning, and developer experience.
API Pagination — Cursor, Offset, and Keyset Patterns
When each method works, performance tradeoffs, and implementation details.
Materialised Views — When and How to Use Them
Incremental refresh, use cases, and implementation across Postgres, Snowflake, and dbt.
Testing Strategy for Data Pipelines
Unit tests, integration tests, data contract tests, and regression testing for pipelines.
Vector Embeddings — How They Work and Where They Live
From text to vectors, similarity search, and choosing the right embedding model.
Implementing Search — From Basic SQL to Elasticsearch
Full-text search progression from LIKE queries to dedicated search engines.
Fix NTFS Errors and File System Corruption
Repair partition table and NTFS filesystem corruption using built-in and free tools.
Building a Data Catalog with DataHub
Ingestion, metadata, search, and making your catalog actually useful.
OpenAPI Spec-First API Development
Write the contract before writing code — benefits, tooling, and workflow.
API Idempotency — Safe Retries for Mutations
Idempotency keys, implementation, and which HTTP methods are idempotent by definition.
Stream Processing with Apache Flink
Event time vs processing time, windows, stateful operators, and production deployment.
Data Contracts — Formalising Agreements Between Producers and Consumers
Schema, SLAs, semantics, and how to enforce data contracts in practice.
PostgreSQL Replication — Streaming, Logical, and Read Replicas
Set up read replicas, understand WAL, and choose between streaming and logical replication.
Our observability stack for production services
Logs, metrics, traces — how we instrument every service we ship.
Message Queue Patterns — SQS, RabbitMQ, and Dead Letter Queues
Fan-out, work queues, priority queues, and poison message handling.
OAuth 2.0 and OIDC — Implementing Secure Third-Party Auth
Authorization code flow, PKCE, scopes, and integrating with identity providers.
Designing a Data Lake on AWS S3
Folder structure, naming conventions, lifecycle policies, and access patterns.
Real-Time Analytics Architecture Patterns
Lambda, Kappa, HTAP, and choosing the right pattern for sub-second analytics.
HTTP Caching Strategies for APIs and Web Applications
Cache-Control headers, ETags, CDN caching, and cache invalidation.
Fix a Corrupted Windows User Profile
Symptoms of a corrupt profile and how to migrate to a new one without data loss.
Time-Series Databases — InfluxDB vs TimescaleDB vs ClickHouse
Comparing purpose-built and general-purpose solutions for time-series data.
Migrating from MySQL to PostgreSQL
Schema translation, data migration, and common incompatibilities to address.
WebSockets — Building Real-Time Features
Connection lifecycle, heartbeats, reconnection logic, and scaling with Redis pub/sub.
Logging Best Practices for Production Services
Structured logging, log levels, correlation IDs, and log aggregation.
Redis Caching Patterns for Production Applications
Cache-aside, write-through, TTL strategy, and cache invalidation approaches.
Microservices Communication — Sync vs Async Patterns
REST, gRPC, message queues, and choosing the right pattern for each interaction.
Data Platform Cost Optimization Strategies
Reducing Snowflake, S3, Spark, and Kafka spend without sacrificing performance.
API Gateway — Responsibilities and Implementation Patterns
Authentication, rate limiting, routing, request aggregation, and when not to use a gateway.
Feature Flags — Safe Deployment and Gradual Rollout
Types of flags, implementation patterns, and avoiding flag sprawl.
API Testing Strategy — Unit, Integration, Contract, and E2E
Building a test pyramid that catches real bugs without slowing delivery.
Docker Containerisation Best Practices
Writing efficient Dockerfiles, multi-stage builds, security hardening, and image size reduction.
Database Connection Patterns in PHP
PDO, prepared statements, connection pooling, and transaction management.
Dependency Management and Supply Chain Security
Lock files, vulnerability scanning, SBOM, and keeping dependencies up to date.
Speed Up a Slow Computer — Full Tune-Up Guide
Software and hardware steps to restore performance on an aging PC.
Async/Await Patterns and Common Pitfalls
Concurrency, parallelism, error handling, and avoiding common async bugs.