I'm developing a small "pet-project" using c9.io service.
Does c9.io suspend like heroku?
Do I need to start server manually if it is?
I can't find this kind of information in official documentation.
Cloud9 does stop processes after certain amounts of time depending on what plan you're on. See official documentation for up to date information.
Related
How can i generate alerts about rules in TimescaleDB? I need to create a rule, and when this rule is broken i want generate a post notification. For example: i want to create a rule that verify if the average temperature in the last 5 minutes of a device D exceeds X, then I want to detect in order to be able to react. Is this possible?
Thanks!
TimescaleDB supports PostgreSQL triggers that can be configured to fire on various changes to the database. See here: http://docs.timescale.com/using-timescaledb/schema-management#triggers
and here for PostgreSQL docs:
https://www.postgresql.org/docs/current/static/sql-createtrigger.html
That should provide a good starting point, but the details of averaging the temperature over a past time window, you'll have to work out depending on how you want to proceed.
According to the official TimescaleDB documentation, best method is to use Grafana and define alert rules
Grafana is a great way to visualize and explore time-series data and
has a first-class integration with TimescaleDB. Beyond data
visualization, Grafana also provides alerting functionality to keep
you notified of anomalies.
[...]
Grafana will send a message via the chosen notification channel.
Grafana provides integration with webhooks, email and more than a
dozen external services including Slack and PagerDuty.
You may also use other alerting tools:
DataDog
Nagios
Zabbix
At the moment I am making an app. I am relatively new but have experience with a lot of different languages like PHP and SQL. My app needs to communicate with a server to post/retrieve data for everyone to see. People also need to be able to login and register. Right now I am using parse because it gives a lot of the requirements in an easy package but parse is retiring soon and I have no experience with setting up my own server.
I was thinking of making my own 'server' from an old computer but not use parse because it will no longer support push notification. Then of course the app needs to communicate with this server. I started looking online and found a lot of terms but not a real clear explanation on how to proceed. I need it to be able to communicate with iOS and Android. Furthermore I was wondering how to execute a script on the server itself. I want to do something with time, once someone uploads something it needs to disappear after 48 hours, but of course it also needs to do this even if the app isn't active on a smartphone
Can anyone tell me how I need to proceed, what to use and where i can find useful info.
My plan for now is creating my own server with something like MongoDB but then i still need something called a backend and different SDK's to communicate with the apps. Maybe its possible to install parse on my own server and add something so i can still use Push and run a script on the server itself.
All help would be very much App-reciated ;)!
The reason of a backend service or framework is to let developer focus on front end app development. Maybe you can check other options like firebase, meoter, or even leancloud. Don't be hurry jump to the decision to make your own backend.
Parse Server is already supporting Push Notifications. I think should keep using Parse. It will become the best framework for backend and API development in a short time. You can also use services like https://www.back4app.com that helps you in all process of configuration of your server.
Do you mean by create your own server running a personal derver pr you mean create your own back end application?
While Zapier is very powerful at putting glue between various APIs, I stumbled upon the use case of creating Zaps programmatically, which would offer even more flexibility.
I did some investigation and it appears that Zapier, to this date, does not provide a public API for doing so. Is there any workaround for that ?
Not currently. Creating a zap involves a lot of UI steps (6 or 7) - many of which depend on choices made in each previous step, so trying to do all that through a remote script might be difficult and messy. Maybe share some ideas on your specific use-case: why do you need to create a zap programmatically?
Keep in mind you can also create private apps on Zapier so if there is specific functionality you need to use with Zapier you can do that without exposing it to the world.
The year 2017 Zapier introduced their Command Line Interface, which makes possible building your app programatically via JavaScript.
You can take a look at the Example Apps as well as the CLI-docs.
I have an intranet web application and I would like to do a simple health check/smoke that runs once an hour to make sure that everything is how it is supposed to be.
The tests are supposed to do some requests and check response for text and in some cases do one or two POSTs to see if the application in answering like it should.
I thought about using Selenium or Visual Studio's WebTest and schedule the run via CC.NET or another CI application but seems like a big shot for a simple thing.
Any ideas?
Thanks
Selenium is a good option. So is PhantomJS.
I dare to say that SWAT could be a good choice for you. It does exactly what you say - makes various http calls and check data returned, also it is possible to pass the test results to different report systems, using TAP format which swat is compliance with. And finally there is a simple DSL to write such a checks.
Regards, the author.
HI,
I would like test access time for my website (or certain page, or query) WHEN there are 5000 concurrent connections. I want to test it for a high traffic website.
is it possible to simulate 5000 concurrent connections? if not, how do people test such situation?
If this question can't be answered, what keyword should I use to start searching?
We used httperf for this before. This tool also gives you some metrics like throughput. There is a website here which has a bunch of open source performance tools listed, most of them related to web performance testing.
There are a few load testing packages out there. HP has a tool call LoadRunner, if you click on the datasheet, it has more information. There also is an open source tool call OpenSTA. I just found that with a google search, so I can't tell you much about how that one works.
Finally I've found a service that allows to test:
up to 10.000 cc/sec for free.
up to 100.000 cc/sec for 100$/month.
https://loader.io/
Disclaimer: I have nothing with this service. I post it here, maybe it helps someone.
You could use something like jmeter. We use this for lead testing. It allows you to simulate all sorts of user activity as test cases, run concurrent connections, submit forms, even logged in actions.
The learning curve can be steep if what you need to do is complicated, but that's because it's so feature rich!