Mar 26, 2026
How to Optimize SQL Queries in 2026 (PostgreSQL 18 Update)
Optimize SQL queries in 2026: PostgreSQL 18 skip scan and async I/O, EverSQL and pgMustard pricing, EXPLAIN ANALYZE workflow, common anti-patterns to delete.
Blog
Insights, guides, and updates from the Dupple team.
Mar 25, 2026
Data Visualization Best Practices in 2026 (Tools + Rules)
Data visualization in 2026: Tableau vs Power BI vs Metabase vs Looker pricing, chart-type rules, accessible color palettes, AI dashboard agents that work.
Mar 23, 2026
Marketing Tech Trends 2026 (Real Changes, Not Hype)
2026 martech trends: cookies still in Chrome, HubSpot AI outcome pricing, Salesforce Agentforce scale, CDP consolidation, what to actually act on this quarter.
Mar 21, 2026
How to Learn Python Fast in 2026 (Realistic 3-6 Month Path)
Learn Python fast in 2026: MOOC.fi free course, Boot.dev, AI pair programming with Cursor and Claude, real salaries ($129K avg), discipline to avoid tool dependency.
Mar 20, 2026
What Is Penetration Testing in 2026 (Cost + AI Tools)
Penetration testing in 2026: PTES vs OWASP WSTG, Burp Suite + Metasploit pricing, PentestGPT and PentAGI AI tools, real SMB cost ranges $4K-$25K.
Mar 19, 2026
AI Training for Employees in 2026 (Vendor-Neutral Guide)
Corporate AI training in 2026: Anthropic Academy free baseline, Coursera and Udemy Business pricing, fluency vs engineering curricula, real measurement metrics.
Mar 18, 2026
What Is Prompt Engineering in 2026 (Job Market + Techniques)
Prompt engineering in 2026: standalone jobs gone, context engineering dominant, real salaries $130-$220K, prompt caching saves 80%, best free courses listed.
Mar 18, 2026
How to Build an MVP Without a Technical Co-Founder (2026)
Build an MVP without a tech co-founder in 2026: Lovable, Replit Agent, Bolt.new prices, fractional CTO costs $8K-$12K/mo, real timeline and budget breakdown.
Mar 17, 2026
Measuring Training Effectiveness in 2026 (Kirkpatrick + AI)
Measure training effectiveness in 2026: Kirkpatrick 4 levels, Phillips ROI, manager behavior surveys, Docebo/Cornerstone/360Learning pricing, AI skill inference.
Mar 16, 2026
How to Build an AI Chatbot in 2026 (Real Costs + Stack)
Build an AI chatbot in 2026: Chatbase vs Botpress vs Voiceflow pricing, LLM costs ($5/$25 Opus), RAG vs fine-tuning, prompt caching saves 80%, build vs buy.
Mar 15, 2026
Online Course Platforms Compared (2026 Real Pricing)
2026 course platforms compared: Teachable, Kajabi, Thinkific, Skool, Circle, Mighty Networks. Real pricing, transaction fees, course vs community camp.
Mar 14, 2026
Project Software Compared (2026 Pricing + Picks by Team)
2026 PM tools: Linear, ClickUp, Asana, Monday, Jira, Notion, Trello, Basecamp pricing. AI features compared. Best by team type, not by feature count.
Mar 13, 2026
Hacker News RSS in 2026 (Best Feeds + Clients Compared)
Hacker News RSS in 2026: official feed limits, HNRSS.org custom filters, Inoreader vs Feedly vs NetNewsWire, Refind for AI summaries, Algolia API tips.
Mar 9, 2026
Newsletter Headlines: 10 Examples That Work in 2026
Newsletter subject lines in 2026: 5 patterns that work, optimal 6-10 words, real CTOR median 6.81%, AI tools worth using, 10 examples that hit 8%+ CTOR.
Mar 8, 2026
PostgreSQL UPDATE JOIN (Actually UPDATE FROM) 2026 Guide
PostgreSQL UPDATE FROM in 2026: full syntax, multiple source tables, PG18 RETURNING old/new, batching large updates, common mistakes that corrupt data.