Software Alternatives & Startups

Google Cloud Spanner VS Firestore

Compare Google Cloud Spanner VS Firestore and see what are their differences

Google Cloud Spanner logo Google Cloud Spanner

Google Cloud Spanner is a horizontally scalable, globally consistent, relational database service.

Firestore logo Firestore

Easily develop rich applications using a fully managed, scalable, and serverless document database.
  • Google Cloud Spanner Landing page
    Landing page //
    2023-09-17
Not present

Google Cloud Spanner features and specs

  • Scalability
    Google Cloud Spanner can automatically scale horizontally, providing robust support for large-scale applications. It can handle petabytes of data across millions of instances with ease.
  • Global Distribution
    Spanner enables globally distributed databases with strong consistency and low-latency reads, allowing applications to deliver seamless performance across the globe.
  • Strong Consistency
    Unlike many other distributed databases, Cloud Spanner offers strong transactional consistency, using Google's TrueTime API to ensure precise timestamp ordering that supports ACID transactions.
  • Fully Managed
    Cloud Spanner is a fully managed service, which means Google handles maintenance tasks such as updates, scaling, and provisioning, reducing the operational overhead for users.
  • SQL Support
    It provides support for SQL queries, making it easier for developers and teams familiar with SQL to integrate and manage their data workloads without needing to learn new paradigms.
  • High Availability
    Cloud Spanner is designed for high availability, with built-in redundancy and failover capabilities that ensure continuous operation even in the face of regional outages.

Possible disadvantages of Google Cloud Spanner

  • Cost
    Google Cloud Spanner can be expensive compared to other database solutions, especially for smaller applications or startups with limited budgets.
  • Limited Ecosystem
    While growing, Spanner's ecosystem is not as mature as more established relational or NoSQL databases, which might lead to fewer third-party tools and integrations.
  • Complexity in Migration
    Migrating existing applications and data to Cloud Spanner can be complex and time-consuming, particularly for those coming from non-relational database systems.
  • Limited NoSQL Features
    For applications that require specific NoSQL features, such as unstructured data handling and schema flexibility, Cloud Spanner may not be the best fit compared to other NoSQL databases.
  • Regional Lock-in
    Although it offers global distribution, data residency and compliance requirements might limit some organizations to specific regions, which can affect the strategic deployment of an application.

Firestore features and specs

  • Scalability
    Google Cloud Datastore can automatically scale to handle large amounts of data and high read/write loads, making it suitable for applications with growing data needs.
  • Fully Managed
    As a fully managed service, Google Cloud Datastore eliminates the need for managing servers, software patches, and replication, allowing developers to focus on building applications.
  • High Availability
    Datastore provides strong consistency for reads and writes and is designed to maintain availability even in case of entire data center outages.
  • Flexible Data Model
    The schemaless nature of Datastore allows for a flexible data model that can easily adapt to changes in application requirements.
  • Integration with Google Cloud Platform
    Datastore seamlessly integrates with other Google Cloud Platform services, which simplifies the process of building end-to-end solutions.

Possible disadvantages of Firestore

  • Complex Query Language
    Datastore Query Language (GQL) can be less intuitive compared to SQL, which may pose a learning curve for developers accustomed to traditional relational databases.
  • Eventual Consistency for Queries
    While Datastore offers strong consistency for entity lookups by key, queries must be specifically configured for strong consistency, otherwise they might return eventually consistent data.
  • Cost
    As usage scales, costs can increase, particularly for applications with high write loads or those requiring many transactional operations, which might be a consideration for budget-conscious projects.
  • Limited Relational Capabilities
    Datastore is a NoSQL database, which means it lacks some of the relational features like joins and complex transactions that developers might expect from a SQL database.
  • Index Management
    Managing indexes can become complex, as every query in Datastore requires a corresponding index, and poorly planned indexes can lead to increased storage costs and slower query performance.

Analysis of Firestore

Overall verdict

  • Firestore is a robust, fully-managed NoSQL document database from Google Cloud that excels at real-time data synchronization, effortless scaling, and seamless integration with the broader Firebase and Google Cloud ecosystems, making it a strong choice for modern app development.

Why this product is good

  • Fully managed and serverless, eliminating the need for infrastructure provisioning and maintenance
  • Real-time data synchronization and offline support, ideal for responsive mobile and web apps
  • Automatic horizontal scaling to handle large numbers of concurrent users
  • Strong integration with Firebase Authentication, Cloud Functions, and other Google Cloud services
  • Flexible document-based data model with powerful querying capabilities
  • Robust security rules for fine-grained access control without a backend server
  • Multi-region replication offering high availability and strong consistency

Recommended for

  • Mobile and web app developers needing real-time updates and offline capabilities
  • Startups and teams wanting to move fast without managing database infrastructure
  • Applications already using Firebase or Google Cloud Platform
  • Projects with unpredictable or rapidly growing traffic requiring automatic scaling
  • Serverless architectures leveraging Cloud Functions and event-driven workflows
  • Collaborative and chat applications that benefit from live data synchronization

Google Cloud Spanner videos

Build with Google Cloud Spanner

Firestore videos

Firestore v10: Setup & Free Tier in 4 Mins (2026)

More videos:

  • Review - Introduction to Firestore | NoSQL Document Database
  • Review - To Realtime or Not? | Get to know Cloud Firestore #10

Category Popularity

0-100% (relative to Google Cloud Spanner and Firestore)
Databases
50 50%
50% 50
Relational Databases
100 100%
0% 0
NoSQL Databases
29 29%
71% 71
Network & Admin
0 0%
100% 100

User comments

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Social recommendations and mentions

Based on our record, Google Cloud Spanner should be more popular than Firestore. It has been mentiond 18 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Google Cloud Spanner mentions (18)

  • SQL vs. NoSQL — stop asking the wrong question
    Also false. Postgres runs massive production workloads, and you'll hit product problems long before it's your bottleneck. And when you genuinely outgrow a single node, distributed SQL exists now — CockroachDB, Google Cloud Spanner, and Vitess all give you horizontal scale without giving up SQL. - Source: dev.to / 1 day ago
  • Golden Ticket To Explore Google Cloud
    Multiregion is possible in Google Cloud using Cloud Spanner, which allows you to replicate the database not only in multiple zones but also in multiple regions as defined in the instance configuration. The replicas allow you to read data with low latency from multiple locations that are close to or within the region in the configuration. - Source: dev.to / about 3 years ago
  • /u/ryuuthecat wonders how a feature of google maps works. Engineer who programmed the feature responds with the answer
    Basically everything I touch is in-house, but a majority of it is available publicly. For instance: https://cloud.google.com/spanner/. Source: almost 4 years ago
  • How Do Companies (Like Evernote) Handle So Many Notes?
    An application that needs to handle a lot of data can use a distributed database like Cloud Spanner. Unlimited scale and you don't have to split your database into multiple tables. Source: almost 4 years ago
  • One of my favorite topics in DE is CAP Theorem. Has anyone managed to accomplish all 3 at once yet or is it truly impossible like the theorem states.
    Look at the architecture and performance of Google's Cloud Spanner, a CP system with 99.999% availability... https://cloud.google.com/spanner. Source: almost 4 years ago
View more

Firestore mentions (3)

  • Announcing Brighter V10: A Major Release with Cloud Events, New Providers, and Enhanced Resilience
    Firestore for Inbox, Outbox, and Distributed Lock. - Source: dev.to / 10 months ago
  • Guide to modern app-hosting without servers on Google Cloud
    Your app must be stateless. Don't use embedded databases. When your users hit your app again, they may be reaching another instance in a completely different state. Persist data in cloud-based storage like GCS, Cloud SQL, or Cloud Firestore. - Source: dev.to / over 1 year ago
  • Introduction to true serverless databases
    Google Firestore is a serverless document database providing direct web, IoT, and mobile app development access. It’s highly scalable with no maintenance window and zero downtime. - Source: dev.to / almost 2 years ago
  • Using Google Cloud Firestore with Django's ORM
    A long time ago, a fork of Django called “Django-nonrel” experimented with the idea of using Django’s ORM with a non-relational database; what was then called the App Engine Datastore, but is now known as Google Cloud Datastore (or technically, Google Cloud Firestore in Datastore Mode). Since then a more recent project called "django-gcloud-connectors" has been developed by Potato to allow seamless ORM integration... - Source: dev.to / over 2 years ago
  • How to deploy flask app with sqlite on google cloud ?
    In that case use Cloud Datastore (aka Firestore in Datastore Mode). It's a NoSQL db that was initially targeted just for GAE (you needed to have a GAE App even if empty to use it) but that requirement has been relaxed. Source: over 3 years ago

What are some alternatives?

When comparing Google Cloud Spanner and Firestore, you can also consider the following products

PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.

MarkLogic Server - MarkLogic Server is a multi-model database that has both NoSQL and trusted enterprise data management capabilities.

Oracle DBaaS - See how Oracle Database 12c enables businesses to plug into the cloud and power the real-time enterprise.

Datomic - The fully transactional, cloud-ready, distributed database

MySQL - The world's most popular open source database

Valentina Server - Valentina Server is 3 in 1: Valentina DB Server / SQLite Server / Report Server