arcus | ARCUS is the NAVER memcached with lists , sets , maps | Caching library
kandi X-RAY | arcus Summary
kandi X-RAY | arcus Summary
arcus is a [memcached][memcached]-based cache cloud developed by [naver corp][naver]. [arcus-memcached] has been heavily modified to support functional and performance requirements of naver services. arcus supports collection data structures (list, set, map, b+tree) for storing/retrieving multiple values as a structured form in addition to the basic key-value data model of memcached. arcus manages multiple clusters of memcached nodes using [zookeeper][zookeeper]. each cluster or cloud is identified by its service code. think of the service code as the cloud’s name. the user may add/remove memcached nodes/clouds on the fly. and, arcus detects failed nodes and automatically removes them. the overall architecture is shown below. the memcached node is identified by its name (ip address:port number). zookeeper maintains a database of memcached node names and
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Trending Discussions on arcus
QUESTION
I can't get my head around the calculation of atan2
and placing a geom_arc
on the intended side.
Here's some dummy data with four pairs of points ABC. I'd like to draw four arcs, each on the side with the smaller angle and print the angle degrees. Calculating angle dregrees works, but I'd need 1) some switch to correct the atan2
and/or 2) another switch to put the arc on the intended side. Just exchanging start
and end
has no effect.
ANSWER
Answered 2021-Nov-11 at 17:58It seems you are looking for something like this:
QUESTION
I would like to use CSS animations to move an SVG along a linear path across a full-window page with aligning the SVG to this path. Referring to the figure below with the path shown as a red line, I want to specify h
in multiples of vh and w
in multiples of vw, e.g. h = 30vh, w = 60vw
, and calculate the angle α
for rotating the SVG shown as the blue triangle.
Or course, this should be responsive and work with different window sizes. I was hoping to do all this in pure CSS.
Following tan(α) = w/h
, I can use the arcus tangens function to calculate the angle α
from the quotient w/h
. Since trigonometric function are not available in CSS yet, I could use a series approximation for calculating the angle as demonstrated here. But the actual show-stopper seems to be the calculation of the quotient w/h
as divisions in CSS require the denominator to be unitless. So, 60vw / 30vh
is not allowed.
Is there a different way to calculate or set the angle in CSS? Or do I have to fall back to a JavaScript solution here?
Edit: Here is a minimal reproducible example. In order to set the rotation in the first keyframe, the actual angle α
would be required. It is currently fixed to rotate(0deg)
so the triangle always points upwards instead in the direction of the linear path.
ANSWER
Answered 2021-Oct-15 at 08:48Following A Haworth's comment, I finally used vmin
to create animations with fixed ratios. This ratio can then be used to pre-calculate an angle as shown in the snippet below.
This solution has some limitations but is responsive and works with different window sizes.
QUESTION
Greetings StackOverflow members.
background information: This is a spring-boot-based project that uses JAX-RS / Jersey as its rest HTTP server instead of spring rest.
Error explanation and question:
send a file from one server to another and receive a response back. (simple right?) functionally the code is below is working. but instead of a 200 response, the sender gets 500 internal server error with the following stack trace.
...ANSWER
Answered 2021-Sep-20 at 12:08Alright. It took me a day to try and resolve this. but was not able to find root cause of this behavior.
So I opted for a workaround solution.
Using jersey exception mapper i check for the specific expectation that is thrown and the method since it should only apply to that location of the code and the response status to see if it needs to be overwritten with 200 ok or pass along with 500.
QUESTION
Here is sample data I am looking for total buying trade value and total selling trades value based on country.
Here are two tables, country and trades Table [companies]:
...ANSWER
Answered 2021-Jul-19 at 10:17Try CTE:
QUESTION
Given a company table companylist
and a import-export table trades
, I want to find the total exports and imports per country. I want to sort them by country name and print 0s instead of nulls if exports/imports are 0. All countries need to be present in output.
Companylist table =>
...ANSWER
Answered 2020-Nov-18 at 07:16Conditional aggregation is an option:
QUESTION
We have a SQL database table recording customer comments (ARCMM). I want to extract the most recent comment for each customer. Some customers do not have any comments (i.e. no entries in ARCMM). The most recent comment for a customer will have the most recent date (field DATEENTR) and, for that date, the highest value of field CNTUNIQ. The query below does not work as expected. Best fix?
Query:
...ANSWER
Answered 2020-Jul-15 at 02:41You could use row_number()
within the left join
, if your database supports window functions:
QUESTION
I'm trying to submit a training script to AzureML (want to use AmlCompute, but I'm starting/testing locally first, for debugging purposes).
The train.py
script I have uses a custom package (arcus.ml
) and I believe I have specified the right settings and dependencies, but still I get the error:
User program failed with ModuleNotFoundError: No module named 'arcus.ml'
This the python code I have:
...ANSWER
Answered 2020-Jun-01 at 20:47I think this error isn't necessarily about Azure ML. I think the error has to do w/ the difference b/w using a hyphen and a period in your package name. But I'm a python packaging newb. In a new conda environment on my laptop, I ran the following
QUESTION
I receive an error, from the below statement; It runs perfectly as a select statement, but fails as a delete. Any idea's how to get this statement working as a delete? Seems to error out at C.*
...ANSWER
Answered 2020-May-07 at 16:53This looks like SQL Server syntax (because of the square brackets surrounding identifiers).
In that case, the problem is with c.*
; you should be using the "raw" table alias instead:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install arcus
Preparation - clone and build this Arcus code, and deploy Arcus code/binary package.
Zookeeper setup - initialize Zookeeper ensemble for Arcus and start Zookeeper processes.
Memcached setup - register cache cloud information into Zookeeper and start cache nodes.
[Arcus cloud configuration file](docs/arcus-cloud-configuration-file.md): Arcus cache cloud settings in JSON format
[Arcus cloud admin script (arcus.sh)](docs/arcus-admin-script-usage.md): A tool to control Arcus cache cloud.
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