a3841479eb
An optimization to avoid writing the same files over and over again. Tested only on Mac OS X. There is a potential problem with this approach on Windows, since the way processes retain open files is different. On Linux (and I assume, OS X, too), when a process has a file open, it reads the file from a memory snapshot loaded by OS. The OS also would increment the reference count for that file, so even if it is unlinked from the FS, OS would still keep it available as long as the process keeps it open. When we want to replace a file under a running Meteor app process, we first delete the old built file and then write a new file to the same path. In my understanding, it would force the OS to assign a different inode for the new file, so the old file and the new file will be different. Then, we either restart the app process, or signal it to reload its assets, so it reads the new files, releasing the older ones. I need to verify this understanding with somebody who actually knows how OS and FS work.
Meteor
Meteor is an ultra-simple environment for building modern web applications.
With Meteor you write apps:
- in pure JavaScript
- that send data over the wire, rather than HTML
- using your choice of popular open-source libraries
Documentation is available at http://docs.meteor.com/
Quick Start
Install Meteor:
curl https://install.meteor.com | /bin/sh
Create a project:
meteor create try-meteor
Run it:
cd try-meteor
meteor
Deploy it to the world, for free:
meteor deploy try-meteor.meteor.com
Slow Start (for developers)
If you want to run on the bleeding edge, or help develop Meteor, you can run Meteor directly from a git checkout.
git clone git://github.com/meteor/meteor.git
cd meteor
If you're the sort of person who likes to build everything from scratch, you can build all the Meteor dependencies (node.js, npm, mongodb, etc) with the provided script. This requires git, a C and C++ compiler, autotools, and scons. If you do not run this script, Meteor will automatically download pre-compiled binaries when you first run it.
# OPTIONAL
./scripts/generate-dev-bundle.sh
Now you can run meteor directly from the checkout (if you did not build the dependency bundle above, this will take a few moments to download a pre-build version).
./meteor --help
From your checkout, you can read the docs locally. The /docs directory is a
meteor application, so simply change into the /docs directory and launch
the app:
cd docs/
../meteor
You'll then be able to read the docs locally in your browser at
http://localhost:3000/.
Note that if you run Meteor from a git checkout, you cannot pin apps to specific
Meteor releases or run using different Meteor releases using --release.
Uninstalling Meteor
Aside from a short launcher shell script, Meteor installs itself inside your home directory. To uninstall Meteor, run:
rm -rf ~/.meteor/
sudo rm /usr/local/bin/meteor
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