PostgreSQL vs MySQL for Solopreneurs 2025: The Honest Truth

TL;DR: For most builders asking about postgresql vs mysql for solopreneurs in 2025, PostgreSQL is the superior choice due to its robust JSON capabilities and integration with modern tooling like Supabase. Only choose MySQL if you are maintaining legacy PHP applications or WordPress sites.

Why database choice matters for solopreneurs in 2025

You are building a SaaS. You have limited time, limited budget, and zero patience for infrastructure headaches. When you are a solo founder, your tech stack isn't just about code—it is about leverage.

Choosing the right database is arguably the most critical specific technical decision you will make. Why? Because while you can rewrite a frontend UI in a weekend, migrating your database schema and data while users are live is a nightmare scenario that kills momentum.

The landscape has shifted. In 2015, the debate was harder. In 2025, the rise of "Postgres-as-a-Service" and the decline of the pure NoSQL hype cycle has changed the answer for most use cases.

At BareStack, we adhere to a philosophy of radical simplicity. We chose our stack to minimize maintenance and maximize shipping speed. This guide cuts through the preferences of enterprise architects and focuses strictly on what matters for the self-hosted database alternative to airtable crowd: speed, cost, and "future-proofing."

Relational databases explained simply

Before we pit giants against each other, let's clarify what we are actually buying into. Most solopreneurs should be using a Relational Database Management System (RDBMS).

What is a RDBMS (and do you need one)?

Think of an RDBMS as a collection of spreadsheets that enforce rules. Unlike a spreadsheet where you can type a date in a "Price" column, an RDBMS screams at you if you try that. It forces structure.

For a SaaS, this structure is vital. You have Users, those Users have Orders, and those Orders have Invoices. These are "relations."

• NoSQL (MongoDB, Firestore): Great for unstructured data but can become a tangled mess of duplicate data as your app grows.
• RDBMS (Postgres, MySQL): Enforces data integrity. If a User is deleted, what happens to their Orders? Relational databases handle this logic natively.

For 99% of business apps, SaaS projects, and content platforms, you want the structure of an RDBMS.

ACID compliance: Why it saves your data

You will hear database nerds talk about ACID compliance. Here is the non-academic translation: ACID compliance means your money doesn't vanish.

ACID stands for Atomicity, Consistency, Isolation, Durability.

• Atomicity: If a user pays for a subscription, two things happen: you charge the card, and you update their status to "premium." Atomicity guarantees that if the status update fails, the charge is rolled back. It's all or nothing.
• Durability: If the server power cord is yanked out the millisecond a transaction finishes, your data is still there when it reboots.

Both MySQL and PostgreSQL offer this. SQLite offers this. If you are building a real business, this is non-negotiable.

Best database solutions for solopreneurs in 2025

Let's look at the three heavyweights. There are others (MariaDB, MSSQL), but they aren't worth the mental overhead for a solo founder.

Option 1: PostgreSQL — The modern standard for SaaS builders

PostgreSQL (or "Postgres") has effectively won the developer mindshare war for new applications. It advertises itself as "The World's Most Advanced Open Source Relational Database," and it mostly lives up to the hype.

Key features, pros and cons: Postgres is object-relational. This means it can handle standard SQL tables just fine, but it also handles complex data types, custom functions, and JSON better than its competitors.

• Pros:

  • JSONB Support: You can store unstructured JSON data inside a structured SQL table and query it efficiently. This effectively makes MongoDB redundant for 80% of use cases.
  • Ecosystem: Tools like Supabase, Hasura, and Neon have built incredible developer experiences purely around Postgres.
  • Extensions: PostGIS makes it the only serious choice for geospatial data (maps/location apps).
  • Strictness: It protects you from bad data better than MySQL does out of the box.

• Cons:

  • Resource usage: Can be slightly heavier on RAM than MySQL for very simple read operations (though this is negligible for modern VPS).
  • Complexity: Tuning vacuum processes (automatic cleanup) can be tricky at massive scale—but solopreneurs rarely hit that scale.

Pricing tiers and who should use it: Open source and free. If you are building a new SaaS, an internal tool, or a data-heavy application, this is your default choice.

Option 2: MySQL — The ubiquitous legacy option

MySQL is the database powering the internet of the past two decades. It runs WordPress, Facebook, and likely your old shared hosting account.

Key features, pros and cons: MySQL is famous for being read-heavy optimized. It is fast at retrieving data, which makes it excellent for content sites.

• Pros:

  • Ubiquity: Every hosting provider on earth supports it.
  • Familiarity: If you learned PHP in 2010, you know MySQL.
  • Read Performance: Historically faster than Postgres for simple read operations (SELECT * FROM table).

• Cons:

  • JSON Support: It exists, but it feels clunky compared to Postgres' implementation.
  • Concurrency: Historically struggled more than Postgres with heavy concurrent writes, though version 8.0 has improved this.
  • Oracle Ownership: While open source, it is owned by Oracle. Many prefer MariaDB (a fork) for this reason, which fragments the ecosystem.

Pricing tiers and who should use it: Open source and free. Use this if you are building themes/plugins for WordPress or migrating a legacy PHP application.

Option 3: SQLite — The ultimate minimalist file-based DB

SQLite is not a server; it's a library that accesses a database file on your disk.

Key features, pros and cons: It requires zero configuration. There is no "startup" process.

• Pros:

  • Zero Latency: Queries don't go over a network; they read a file. It is incredibly fast.
  • Portability: The database is just a file (db.sqlite). Backing it up is as simple as copying that file.
  • Maintenance: No users to manage, no ports to open.

• Cons:

  • Concurrency: Traditionally, SQLite locks the file when writing. Only one write can happen at a time. (WAL mode helps, but it has limits).
  • Scaling: You cannot easily split the database across multiple servers later.

Pricing tiers and who should use it: Open source and public domain. Use this for prototypes, desktop apps, or incredibly low-traffic tools where simplicity is the only metric that matters.

Comparison table: PostgreSQL vs MySQL vs SQLite

Here is how the options stack up for the best database for side projects 2025:

Bottom line: If you are building a business, Postgres offers the best balance of feature richness and future-proofing. If you want a quick hack, SQLite is unbeatable.

Deep dive: Why JSON support wins for minimalists

The primary reason we recommend PostgreSQL for solopreneurs is the JSONB column type. This single feature helps you solve the "help me choose a database for my saas" dilemma by giving you the best of both SQL and NoSQL worlds.

Reducing tech stack bloat with built-in JSON

In the early days of a startup, you don't know your exact data schema. You might want to store user settings, but you don't know if you need a "dark_mode" column or a "notification_email" column yet.

In MySQL (traditionally), you would have to run a migration to add columns every time you had a new idea. In NoSQL (MongoDB), you just dump data, but you lose the relationships.

Postgres JSONB lets you define a strict table for Users (id, email, password) and add a settings column that is just a JSON blob.

sql -- Postgres allows querying INSIDE the JSON SELECT * FROM users WHERE settings->>'theme' = 'dark';

This allows you to move fast like a NoSQL developer while keeping the safety of a relational database. It keeps your stack minimal because you don't need Redis or Mongo on the side; Postgres does it all.

Escaping the NoSQL hype cycle

For a few years, everyone thought SQL was dead. We learned the hard way that "schemaless" data eventually becomes "schema-mess" data. For a solopreneur interacting with invoicing, CRM data, or finances, data consistency is king. Postgres allows you to be flexible without being reckless.

Deep dive: The self-hosting ecosystem

In 2025, you are likely looking for a self hosted database alternative to Airtable or a backend that doesn't cost $500/month.

Running on Hetzner with Coolify

The economics of self-hosting have never been better. You can rent a high-performance VPS from Hetzner for €5/month. Using tools like Coolify (an open-source Vercel/Netlify/Heroku alternative), you can spin up a Dockerized PostgreSQL instance with one click.

This setup gives you total control. Your data lives on your server. You aren't paying per "read unit" or "active user." For a bootstrapped solopreneur, predictable pricing is freedom.

The rise of 'Postgres-as-a-Service' (Supabase)

If you don't want to manage a server, the Postgres ecosystem has another ace up its sleeve: Supabase. Supabase effectively wraps PostgreSQL with a suite of tools—Authentication, Realtime subscriptions, and auto-generated APIs.

This is the stack we chose for BareStack. It allows us to focus on building the dashboard logic while leaning on the robustness of Postgres for the heavy lifting. It proves that Postgres isn't just a database; it's a platform.

Real-world scenarios: How it works in practice

Let's look at concrete examples of how this choice plays out for postgresql vs mysql for solopreneurs.

Scenario 1: The 'build-in-public' SaaS founder

You are building a tool to help creators schedule tweets. You need to store user accounts, OAuth tokens from Twitter, and their scheduled posts.

• The Problem: Twitter's API payload changes often. You need relational data (User -> Posts) but also flexible storage for the API response.
• The Choice: PostgreSQL.
• Why: You create a Posts table. You store the core data (post text, scheduled time) in strict columns. You store the raw Twitter API response in a JSONB column.
• Outcome: When Twitter changes their API response format, your app doesn't break, and you don't need a database migration. You query the JSON directly.

Scenario 2: The high-traffic content publisher

You are launching a niche news site. You expect high read traffic, very few writes (just you posting articles), and you are using a standard CMS framework.

• The Problem: You need maximum compatibility with caching plugins and existing CMS themes.
• The Choice: MySQL (or MariaDB).
• Why: If you are using WordPress, Ghost, or Drupal, MySQL is the first-class citizen. It is optimized for exactly this workload.
• Outcome: Your site runs effectively on cheap shared hosting or a $4 VPS because the LAMP stack (Linux, Apache, MySQL, PHP) is incredibly memory efficient for this specific use case.

Decision framework you can apply today

Still stuck? Use this checklist to decide in the next 5 minutes.

Choose SQLite if:

• ☐ Your app is single-user (desktop or local-first web app).
• ☐ You are building a prototype to throw away in 2 weeks.
• ☐ You absolutely cannot afford any server configuration time.

Choose MySQL if:

• ☐ You are using WordPress, Laravel (often defaults to MySQL), or legacy PHP.
• ☐ Your team already knows MySQL inside out and refuses to switch.

Choose PostgreSQL if:

• ☐ You are building a SaaS in 2025.
• ☐ You need robust JSON support.
• ☐ You plan to use Supabase, Vercel Postgres, or Neon.
• ☐ You are dealing with location data (PostGIS).

Frequently asked questions

Is PostgreSQL slower than MySQL for simple apps?

Generally, no. In the past, MySQL had an edge on simple read-heavy workloads (like loading a blog homepage thousands of times). However, with modern hardware and Postgres 14+, the difference is negligible for 99% of solopreneur use cases. Unless you are hitting millions of requests per second, you won't notice the difference.

Can I migrate from MySQL to Postgres later?

You can, but it is painful. While tools exist to convert the schema and move data, specific SQL syntax variations and data type differences often break application code. It is much better to start with the database you intend to scale with.

Does BareStack use PostgreSQL or MySQL?

We use PostgreSQL. Specifically, we leverage the Supabase ecosystem which is built on top of Postgres. This gives us the relational integrity we need for CRM and Invoicing features while offering JSON flexibility for user configurations.

Which database is cheaper to self-host?

They are effectively the same. Both are open-source and free to license. Both run efficiently on a $5/month VPS (like a Hetzner CX22). The cost difference only appears at enterprise scale, which solopreneurs shouldn't worry about yet.

Do I need a separate database admin?

No. For solopreneurs, "managed" databases (like Supabase or DigitalOcean Managed Databases) or simple self-hosting tools (Coolify) handle the backups and updates. You do not need a dedicated DBA in 2025 until you are making serious money.

Is SQLite enough for a real business?

It can be. There is a growing movement ("SQLite in Production") championed by tools like PocketBase and frameworks like Rails. If your app writes data infrequently but reads often, modern SQLite on a fast drive is surprisingly capable for small B2B SaaS apps.

Keep reading: Related guides

Want to dive deeper into the tech stack choices that save you time? Check out these related resources:

• Comparison: Supabase vs Firebase from a solopreneur perspective — Why we bet on the Postgres ecosystem over Google's walled garden.
• The solopreneur's guide to Coolify — How to deploy your database and apps on cheap hardware without being a sysadmin.
• The Zen of a simple tech stack — The philosophy behind keeping your tools minimal so you can focus on revenue.

The bottom line: Stop overthinking and ship

The "perfect" database is the one that is running in production with real users. For postgresql vs mysql for solopreneurs in 2025, Postgres is the safest, most flexible bet. It adapts to your schema changes via JSONB and scales from zero to IPO.

But remember, users don't care about your database. They care about solving their problems.

If you are a solopreneur looking to simplify not just your database, but your entire business operation, try BareStack for free at https://app.barestack.org. No credit card required, just clean code and honest tools.

Stop debating schema design. Start building.

Sources

• PostgreSQL documentation
• MySQL documentation