Understanding Monorepos: Benefits, Tools, and How to Choose the Right Solution

Monorepos, which store multiple related projects in a single repository, have become popular among web developers for their ability to simplify code sharing, reduce duplication, and streamline project creation.

The article first defines a monorepo and contrasts it with polyrepo and monolith approaches, highlighting issues such as cumbersome code sharing, duplicated effort, high maintenance costs, and inconsistent tooling that can arise in polyrepo setups.

It then outlines the benefits of adopting a monorepo, including easy code sharing, zero‑overhead new project creation, atomic cross‑project commits, unified version control, and more robust development experiences enabled by automated testing.

To build an effective monorepo, the article identifies three essential characteristics: development agility (local build caching, parallel tasks, distributed build caches, remote execution, and affected‑project detection), clear structure (workspace analysis and dependency‑graph visualization), and manageability (shared source code, consistent tooling across languages, code generation, and fine‑grained project permission management).

The article reviews several widely used monorepo tools—Bazel, Gradle, Lage, Lerna, Nx, Rush, and Turborepo—detailing which features each supports, using checkmarks (✅), partial support (✴️), or lack of support (⛔) in a comparison table.

It concludes with practical advice on choosing a tool based on team needs, emphasizing that the choice between a single repository and multiple repositories should depend on existing infrastructure, reuse mechanisms, and testing practices.

Additional resources such as videos and articles are listed for readers who want to explore monorepo concepts and tooling further.

Feature

Feature

Tool

-

-

Bazel

Gradle

Lage

Lerna

Nx

Rush

Turborepo

Development Agility

Local Parallel Tasks

✅

✅

✅

⛔

✅

✅

✅

Local Build Cache

✅

✅

✅

✅

✅

✅

✅

Distributed Build Cache

✅

✅

✅

⛔

✅

✅

✅

Distributed Task Execution

✅

✴️

⛔

⛔

✅

✴️

⛔

Remote Execution

✅

⛔

⛔

⛔

⛔

⛔

⛔

Affected Project Detection

✴️

✅

✅

✅

✅

✅

✅

Clear Structure

Workspace Analysis

✴️

✅

✅

✅

✅

✅

✅

Dependency Graph Visualization

✅

✴️

✴️

✴️

✅

✴️

✅

Manageability

Source Code Sharing

✅

✅

✅

✅

✅

✅

✅

Consistent Tooling

✅

✅

⛔

⛔

✅

⛔

⛔

Code Generation

✴️

✴️

✴️

✴️

✅

✴️

✴️

Project Permission Management

✅

✴️

✴️

✴️

✅

✅

✴️