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EST. 2024 · VOL. IV · ISSUE 071 · NEW DELHI / SF / LONDON
The

LEADERSVAULT

Intelligence · Leadership · Engineering
Where IT leaders come to think, grow, and lead
Section VEngineering
Engineering · Deep Dive

The Modular Monolith Renaissance: Why Staff Engineers Are Moving Away from Microservices

After years of microservice evangelism, a growing cohort of Staff+ engineers are quietly rebuilding monoliths — and the performance data is compelling.

Dev SharmaMarch 11, 202611 min
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Code From The Vault
// Clean Architecture in Next.js 14
// app/api/mentorship/route.ts

import { createClient } from '@/lib/supabase/server';
import { NextResponse } from 'next/server';

export async function POST(request: Request) {
  const supabase = createClient();
  const body = await request.json();
  
  const { data, error } = await supabase
    .from('mentorship_sessions')
    .insert({ ...body, status: 'pending' })
    .select()
    .single();

  if (error) return NextResponse.json({ error }, { status: 400 });
  return NextResponse.json({ session: data });
}

Next.js 14 API route with Supabase

""The best code is the code you don't have to maintain. The second best is code your team can change without fear."Kelsey Hightower, Google
System Design

System Design Interviews Have Changed — The New Meta for 2026

What FAANG interviewers look for now that AI can answer classic questions in seconds.

9 minRead More
Career

Staff Engineer Archetypes: Which One Are You Building Toward?

Will Larson's 5 archetypes updated with input from 60 Staff+ engineers across India and the US.

7 minRead More
Architecture

Event-Driven Architecture in 2026: Patterns That Scale and Ones That Dont

A practical review of Kafka, Pub/Sub, and event mesh patterns from teams running at 10M+ events/day.

10 minRead More
Performance

Frontend Performance Beyond Core Web Vitals: What Actually Converts

INP replaced FID, but most teams are still optimising for the wrong signals. Here is what correlates with revenue.

8 minRead More
Security

Supply Chain Security for Engineering Teams: A Practical 2026 Checklist

From SBOM to SLSA frameworks — what mature teams do that startups skip until it is too late.

6 minRead More
AI Tooling

Cursor vs GitHub Copilot vs Tabnine: 30-Day Productivity Audit

Six teams. Three tools. One winner — and the results are not what we expected.

9 minRead More
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