daa | decentralized autonomous association
kandi X-RAY | daa Summary
kandi X-RAY | daa Summary
DAAS (or DAA) is a minimum demostrator of a legally compliant DAO for Swiss associations. This document describes the technical setup of the DAAS project. For further details, see the full project specifications on the DAA wiki.
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QUESTION
I have a Java SpringBoot2 application (app1) that sends messages to a Google Cloud PubSub topic (it is the publisher).
Other Java SpringBoot2 application (app2) is subscribed to a subscription to receive those messages. But in this case, I have more than one instance (the k8s auto-scaling is enabled), so I have more than one pod for this app consuming messages from the PubSub.
Some messages are consumed by one instance of app2, but many others are sent to more than one app2 instance, so the messages process is duplicated for these messages.
Here is the code of consumer (app2):
...ANSWER
Answered 2021-Mar-22 at 10:52In general, Cloud Pub/Sub has at-least-once delivery semantics. That means that it will be possible to have messages redelivered that have already been acked and to have messages delivered to multiple subscribers receive the same message for a subscription. These two cases should be relatively rare for a well-behaved subscriber, but without keeping track of the IDs of all messages delivered across all subscribers, it will not be possible to guarantee that there won't be duplicates.
If it is happening with some frequency, it would be good to check if your messages are getting acknowledged within the ack deadline. You are buffering messages for 1s, which should be relatively small compared to your ack deadline of 30s, but it also depends on how long the messages ultimately take to process. For example, if the buffer is being processed in sequential order, it could be that the later messages in your 1000-message buffer aren't being processed in time. You could look at the subscription/expired_ack_deadlines_count
metric in Cloud Monitoring to determine if it is indeed the case that your acks for messages are late. Note that late acks for even a small number of messages could result in more duplicates. See the "Message Redelivery & Duplication Rate" section of the Fine-tuning Pub/Sub performance with batch and flow control settings post.
QUESTION
Here is the data
...ANSWER
Answered 2021-Apr-23 at 16:50df["MIN_VALUE"] = df.loc[:, "VAR1":].apply(
lambda x: min((v[0] for v in x[x.notna()]), default=np.nan), axis=1
)
print(df)
QUESTION
I'm a total Powershell newb and still learning. I am trying to get a list of Azure Webjobs that has been stopped in a webapp. I understand when i run the command az webapp webjob continuous list, id get a large set of array data.
I am having troubles with splitting it up, could someone advise how would i split it up as individual jobs and their properties? i tried $webjobs = ($webname.Split('}')) and it wont split up the giant array.
This is my current code
$groups = get-AzResourceGroup | where{$_.ResourceGroupName -like "Dev"} foreach($group in $groups){
...ANSWER
Answered 2021-Apr-13 at 05:36The result you get is expected for the code written. Taking into account tsv docs, means that $webname
and $webstatus
are arrays. When you write Write-Host $webstatus
it will print all the data in the array, in this case:
QUESTION
I'm new to the SQL-world and I'm struggling with my result set...
I use 2 CTEs that I link together as
- CTE A: select A, B, C, D, E, F, G, H, I, J, K (from 8 diff tables)
- CTE B: select A, B, C, D, E, L (from 6 diff tables; A through E are the same)
I then try to get a result table which does the following:
A,B,C, 1st,2nd,3d
-> A-D: the identifying columns which determine what specific item we're talking about
1st, 2nd and 3d depend on what values are found in the CTE
My query is as follows:
...ANSWER
Answered 2021-Apr-13 at 05:19What about using GROUP BY
and LISTAGG
?
Something along the lines of
QUESTION
I am trying to send an authentificated message over an API at iconomi.com. I am used to sign message when dealing with other exchange API, but can't be authentificated with this specific one.
I read the official documentation for authentification:
You generate the ICN-SIGN header by creating a sha512 HMAC using the base64-decoded secret key on the prehash string timestamp + method + requestPath + body (where + represents string concatenation) and base64-encode the output, where:
the timestamp value is the same as the ICN-TIMESTAMP header. the body is the request body string or omitted if there is no request body (typically for GET requests). method must always be in upper case
Example: base64_encode(HMAC_SHA512(secret_key, timestamp + upper_case(method) + requestPath + body))
I found also a java client example on the official github, please see bellow signature generation in java :
...ANSWER
Answered 2021-Apr-11 at 12:30This code will work for GET:
QUESTION
(LANGUAGE : VB.NET)
(TYPE : DESKTOP)
(GOAL : STATISTICS on dashboard)
1- What is the best place to place "New datatable" without making mistakes? Is it before (For..Next) or After
2- I spin a large number of tables in the database every 10 seconds Is there any advice for a clean code Because the program gets heavy after hours
thank you
...ANSWER
Answered 2021-Apr-02 at 09:34If you create your daa
and dtt
variables inside the For
-loop, they will be "destroyed" at the end of every loop execution and re-created in a next loop execution. That has to do with scope. If you actually want that to happen depends on how you intend to process the data on your dashboard. You only show code that retrieves data from the database, so based on the code you provided it cannot be determined what the "correct" way would be in your scenario.
You should also mind that several objects can (and should) be disposed if you are done using them. If you fail to properly dispose such objects (like your DataTable
and OleDbDataAdapter
instances), they will stay "alive" somewhere in your computer's memory (probably until the application is terminated). Apart from eating memory, they might hold other system resources occupied as well. That can be one of the main reasons why your program becomes "heavier" in the course of time while it is running.
Finally, I would suggest to combine all those separate SQL queries in a single SQL query. Then you can execute that single query every 10 seconds. Every query you execute has some overhead, so combining them as much as possible will almost always be somewhat faster.
There are at least two possible strategies for creating a single query for your scenario. One querying strategy uses multiple subqueries:
QUESTION
It's not my proudest moment to say that I am struggling with this since yesterday, I managed to make my gallery thumbnails look almost like the model in the picture that I uploaded, but I can't add the "image title" section. I managed at some point to put a title and the gray background, but when I hovered on it, only the image moved and not the title. Please help me so I can get rid of this problem once and forever (Thank you for your time):
...ANSWER
Answered 2021-Mar-17 at 01:34If you want the hover styling to apply to the title text and the image, just use transform
on the .box
container hover state instead of only the image with .container img:hover
. This way both the and the
text will "move as one" since they are both children of the
.box
parent container. Try this out.
QUESTION
I have an array of objects:
...ANSWER
Answered 2021-Mar-12 at 11:47You can use all
function for this task following way, consider following example
QUESTION
I try to add space between each letter from column "col2" on dataframe df_input
...ANSWER
Answered 2021-Jan-14 at 11:05QUESTION
I am writing a space invaders emulator as a personal learning project. I have run into an issue where it seems that the ReadByte()
method in the FileStream
class is reading more than one byte at a time. Here is the code:
ANSWER
Answered 2020-Nov-24 at 16:00There are two ReadByte
calls here;
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