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Add to SafariWhen comparing dotCloud vs Modulus, the Slant community recommends dotCloud for most people. In the question“What are the best hosting services for Node.js apps?” dotCloud is ranked 5th while Modulus is ranked 6th. The most important reason people chose dotCloud is:
Most other PaaS providers only allow for multiple, low-memory instances for horizontal scaling, but dotCloud also allows for vertical scaling and resource-heavy applications by adjusting per-instance memory availability.
Question Ranking
Pros
Pro Adjust per-instance memory
Most other PaaS providers only allow for multiple, low-memory instances for horizontal scaling, but dotCloud also allows for vertical scaling and resource-heavy applications by adjusting per-instance memory availability.
Pro Quick deployment
dotCloud is usually very fast when it comes to deploying your project. The CLI tool is very good at that and deploys your build almost as soon as you push it.
Pro Thorough Documentation
The documentation is very good an explains everything in-depth.
Pro Support for various types of databases
Supports Postgres, MongoDB, RabbitMQ, Redis, and MySQL. All of these can be used without any additional pricing, no need to pay for expensive addons.
Pro Great support
There are a number of ways available to contact their support team (email, twitter, IRC and even through phone). They usually respond very fast even to emails and the responses are very friendly and helpful.
Pro Great support for Meteor
Modulus has a tool called demeteorizer which takes a standard Meteor application and turns it into a regular Node application so that it can run on Modulus.
Cons
Con Poor database performance
When your databases have a very high write volume dotCloud starts having some serious problems keeping up with it. Performance drops completely and in the worst case scenario the database crashes and starts going down daily.
Con Slow deployment process
The deployment process in Modulus can be slow depending on the size of the project. On every deploy the whole application is bundled (except node_modules and deployed to Modulus. Since it doesn't use something like git it has to upload every file on each deploy instead of "diffing" them.
