rapid | Rapid is a scalable distributed membership service | Architecture library
kandi X-RAY | rapid Summary
kandi X-RAY | rapid Summary
Rapid is a distributed membership service. It allows a set of processes to easily form clusters and receive notifications when the membership changes. We observe that datacenter failure scenarios are not always crash failures, but commonly involve misconfigured firewalls, one-way connectivity loss, flip-flops in reachability, and some-but-not-all packets being dropped. However, existing membership solutions struggle with these common failure scenarios, despite being able to cleanly detect crash faults. In particular, existing tools take long to, or never converge to, a stable state where the faulty processes are removed. To address the above challenge, we present Rapid, a scalable, distributed membership system that is stable in the face of a diverse range of failure scenarios, and provides participating processes a strongly consistent view of the system’s membership.
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Top functions reviewed by kandi - BETA
- Decide whether a new view change should be received
- Adds a node to the ring
- Delete a node from the ring system
- Clears all pending changes
- Handles a bulk request
- Selects a proposal to be applied to the coordinator
- Produce a list of report updates for a link
- Handle incoming alert updates
- Main entry point
- Starts the cluster
- Send a message
- Helper method to start a call
- Starts the server
- Filter out incoming edge update messages
- Gets the best attempt
- Creates a channel to the remote endpoint
- Receive a reply
- Extract the joinerUUID and metadata from the node
- Generates a list of node status change
- Set the recipient list
- Starts the RPC server
- Run the probe
rapid Key Features
rapid Examples and Code Snippets
Community Discussions
Trending Discussions on rapid
QUESTION
I have written the following function. It returns data from an API. It returns every value from the API call. What I would like to do is take out print(lichess_response)
and either yield or return the reponse so I can call any value when I call the function. That way I don't have to write a function for each value.
My code:
...ANSWER
Answered 2021-Jun-13 at 19:32If all you want is to collect what you are currently writing to standard output in a single list, that's simply
QUESTION
I'm trying to paint "pixels". I created Conway's game of life in Unity and i want to add a feature where you press mouse button and when it's pressed you "paint" - set cells alive. So my idea was:
In Update() if mouse button is pressed Start Coroutine.
In Coroutine you have loop that sets cell pointed by Input.mousePosition to Alive-state then waits for end of frame. Loop, and by that Coroutine ends when that mouse button is released.
My problem is that if you move mouse rapidly created line will not be continuous, because inputs form mouse from two frames will be different (far apart).
Since you can take Input.mousePosition only once per frame i tried approximating this by storing mousePosition from previous frame and calculating all points that lie on Edge between CurrentMousePosition and PreviousMousePosition
However i was not happy with the result.
My Question is: is there a better way to prevent this un-continuous line than letting it be and then fixing it? And if not is there a better way to approximate points that lie on Edge?
...ANSWER
Answered 2021-Jun-09 at 23:54You could interpolate with a resolution variable. Interpolation finds a point between two points, based on t. t is between 0 and 1, and when closer to 0, the closer to the output is to the first vector, and when closer to one, the closer the output is to the second. We could use a for loop using a resolution value as the resolution of the interpolation (a resolution of 2 would have t as 0, 0.5, and 1).
Here is a script (not yours) that uses interpolation with the mouse position:
QUESTION
- I want to scedual a task with crontab to run a python file in a specific anaconda environment every day at a certain time.
- I also have a python script to do so.
- The pythons script runs if I jsut execute it with
python h.py
in the anaconda evoronment in terminal. h.py is in the home directory - I am usaing Ubuntu 20.04, and i havent refreshed on intalled any new cron or crontab
- I have tried the following commands to get it work but they just do Nothing (the result should be a folder and it is learly not has been created)
ANSWER
Answered 2021-Jun-09 at 10:37If the Python file only need python (not other library)
QUESTION
I have my code below from Backend that is working fine when I test it using Laravel's blade. But I can't do the same in using Axios in my React frontend (see frontend code below).
...ANSWER
Answered 2021-Jun-08 at 05:37It might be to do with how you are converting the response to a blob. Here is a block of code that I always use when I have to do something like this. I have formatted it to suit your code above so hopefully it will work the same way
QUESTION
I use MPChart to plot rapidly updating data live. It is crucial that the user can freely scroll along the Y-Axis as the graph gets updated. After every update, I use myChart.moveViewToX()
to automatically scroll along the x-axis. However, moveViewToX()
also moves the view to 0 along the Y-axis.
Since moveViewToX
does not feature a parameter like "ignoreY" or "keepY", I would like to use
mChart.moveViewTo(centerX, centerY, YAxis.AxisDependency.LEFT);
, where centerY
is the Y-Position that the user has scrolled to.
So far, I have not found any way to access this value in the MPChart documentation.
...ANSWER
Answered 2021-May-04 at 15:25You should be able to get the center Y by doing the following:
QUESTION
As part of an intro to databases class, we've been told to create a function using PL/pgSQL that gives out a factorial of a number. Now since x! increases rapidly as a function, we've decided to return a bigint
due to it being a large range integer.
ANSWER
Answered 2021-Jun-05 at 11:19Your conditional check should be inclusive of 21
:
QUESTION
I'm trying to implement JSON logs for my Node.js server; however, when I rapidly send requests, JSON.parse()
throws errors. I believe that this may be caused by the concurrent reading and writing to my log file, as the fs
methods are asynchronous.
One of the errors I received was:
...ANSWER
Answered 2021-Jun-03 at 10:23Concurrent requests to your appendJson()
method are the cause of your problem. While one web request is in progress another one comes in. You must organize access to the log file so only one concurrent access is in progress at any time.
Something like this may work if you have just one log file.
There's a fileAccessInProgress
flag and a queue of items to write to the file. Each new item gets appended to the queue. Then, if file access isn't active, the contents of the queue get written out. If new items arrive while access is in progress, they get appended to the queue too.
QUESTION
I am using Algolia for full text search of a Firestore collection. It works very well, from a search prespective.
I am using Cloud Functions to sync the data - following the pattern found in many blog posts: I use the Firestore .onCreate()
.onUpdate()
and .onDelete()
hooks to prompt updates to the Algolia index.
e.g.
...ANSWER
Answered 2021-Jun-03 at 22:18Since there's no way to guarantee the order of execution, it's hard to find a to write this particular function. But I can think of a few work-around for the problem you have:
- It sounds like you are only rapidly updating right after it's created? In that case maybe what can work is having your
create
write to a draft collection and have yourupdate
copy the updated data into the searchable collection. - Rather than updating, add new documents with timestamp and filter the result at query-time.
- If your client can tolerate stale data, you can have a scheduled function that syncs all documents with Algolia.
QUESTION
I have a Spring boot application running on docker container as an init.d service. I followed the Spring Boot Unix/Linux Services guide to set it up.
Since the application is being started as a daemon service, the operating system creates log file under the /var/log/ directory and records the application logs in there. The problem is that since the application has lots of logging, the file increases in size rapidly. Moreover, I have a logback configured to manage application logs, thus, I do not need the default system logging.
I tried customizing the startup script but I only managed to change the default values (LOG_FILENAME and LOG_FOLDER), not remove them.
So my question is: Is there a way I can disable system logs for specific init.d service? If yes, how?
...ANSWER
Answered 2021-Jun-01 at 13:05One solution is to create .conf file having the same name as the application .jar file and put them into the same directory. For example:
QUESTION
[image showing what I need to create
...ANSWER
Answered 2021-May-31 at 17:55Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install rapid
You can use rapid like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the rapid component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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