User Friendly We've made sure Passenger remains incredibly easy to set up and use.
One command
That’s all it takes to run our automated installer! Passenger’s installation process includes either automatic NGINX or automatic Apache integration to reduce work and moving parts on your end. Passenger also plays nicely with other tech that is commonly found in today’s server stacks, like Docker.
Rubygem, APT and YUM packages
Docker integration & more
Reliable & Secure
Passenger was designed with security and stability in mind. This kind of attention to detail allows you to use Passenger to power even the most business critical apps with confidence.Secure
Passenger defends against slow client attacks and common HTTP parser exploits, and uses privilege separation to keep intruders contained.Resilient
Passenger experiences fewer dropped or errored requests than other app servers, and can limit application memory use and response times.Analytical
Root out issues like stuck apps or memory leaks with request inspection, backtrace dumps, and accurate CPU and memory stats.Easy debugging
Inspect or modify code on the fly by attaching a live IRB console, Ruby debugger, or low-level GDB to your running app.Polyglot
The new standard in DevOps, Passenger® 6 is infrastructure independent.Fast, Efficient & Scalable
Passenger utilizes C++ to leverage the bare metal of your servers as much as possible for maximum efficiency and performance. Passenger also supports evented I/O for maximum scalability.Turbocaching
Passenger leverages your CPU’s hardware cache to serve up pages at up to 100x higher rates than competing solutions. Unlike alternative solutions, this built-in feature can be enabled with a single line config.
Turbocaching leverages your CPU’s ultrafast L1 and L2 caches to store & access data on. This minimizes the need for the CPU to do data fetch cycles to RAM, and can result in 100x more requests p/sec.
Outstanding Features
Passenger utilizes Vectored IO (a.k.a. scatter/gather IO) internally to prevent the copying of buffer data needlessly during concatenation. This means that Passenger is extremely memory-efficient and minimizes the amount of system calls to achieve maximum CPU efficiency!
Maximum Scalability
Passenger supports evented I/O and multiple concurrency models to ensure that requests are handled both rapidly and efficiently from a single Passenger instance.
Premium Features
The premium features are for businesses that want to go the extra mile to deliver the best quality of life for their web apps and customers.
Rolling Restarts
Redeploy your application without downtime or large memory overhead to reduce cost and minimize customer impact.
Multithreading Ruby only
Optimize your applications’ use of CPU power and memory for the most efficient use of your hardware.
Error Resistance
Automatically cancel deployment when Passenger detects errors, to minimize customer impact.
Live Debugger Ruby only
Allow your engineers to connect to your live application to find and resolve issues without impacting performance.
Mass Deployment
Easily manage hundreds of applications with a single command and save big on operational costs.
Resource Limits
Passenger curbs application resource use to ensure stability and reduce operational costs.Comparison Table
Passenger is currently one of the most feature rich app servers available. Here's how it compares to others. But why not also experience it for yourself? get started in 10 minutes|
Passenger enterprise
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Passenger open source
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Unicorn
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Puma
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|---|---|---|---|---|
| Multi-CPU-Core Utilization | ||||
| Fair Traffic Distribution | ||||
| Copy-On-Write Preloading | ||||
| Multi-Process | ||||
| Request Buffering | ||||
| WebSocket-compatible Response Buffering | ||||
| Basic Documentation and Config Reference | ||||
| In-Depth Documentation (End-To-End Tutorials, Use Cases, Related Tools) | ||||
| Deep Web Server Integration | ||||
| Turbocaching | ||||
| Process Autoscaling | ||||
| Multitenant (n apps, 1 instance) | ||||
| Generic Language Support | ||||
| Automatic Privilege Separation | ||||
| OS Packages (APT, RPM) | ||||
| CPU / Memory / Process Stats | ||||
| Multithreading | ||||
| Memory-efficient Zero-downtime Rolling Restarts |
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| Error Detection | ||||
| Live Debugging | ||||
| Mass Deployment | ||||
| Downtime Prevention | ||||
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See the advantages for yourself in under 10 minutes, or contact us with your questions.
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