sequent | CQRS & event sourcing framework for Ruby | Microservice library
kandi X-RAY | sequent Summary
kandi X-RAY | sequent Summary
Sequent is a CQRS and event sourcing framework written in Ruby.
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- Set the migration class name
- Set the id for this table .
- Set the table name
sequent Key Features
sequent Examples and Code Snippets
Community Discussions
Trending Discussions on sequent
QUESTION
I deployed a lambda, SQS standard queue and Dead letter queue on AWS. And I configured maxReceiveCount
in the queue to retry before putting events to DLQ. Lambda pulls events from SQS queue in batch and process each event sequently. My question is about how retry
works in case of error. There are two retries, one is on lambda maximumRetryAttempts
, the other is on SQS and DLQ. Should I disable the lambda one?
In function, when it processes one event it calls deleteMessage
on sqs to delete it. If there is any event that throws exception, the function throws it to lambda to make the retry happen so that it won't retry the success events.
But lambda itself has a maximumRetryAttempts
and should I set it to 0
? otherwise, will it retry before return to SQS? If I don't disable it, will the retry to process the whole batch of events including the success one?
ANSWER
Answered 2021-Apr-15 at 03:39Not sure which maximumRetryAttempts
on lambda you are referring to. But When you use SQS with Lambda through event source mapping, as its done by default, there is no any retry parameter on lambda.
The only retry that applies is set at SQS, not lambda.
The retry option for lambda I can think of, and maybe you are thinning off as well, is for asynchronous invocation. This does not apply for SQS, as your lambda is invoked synchronously with SQS:
Lambda polls the queue and invokes your Lambda function synchronously with an event that contains queue messages.
QUESTION
It,s look like i want to convert multiple row to single row in animal column. But, it only conditional if they met sequential number and lowercase alphabet. after that, it restart an index to become sequent
So, i have a dataframe like :
...ANSWER
Answered 2021-Apr-11 at 08:39We can identify the sequential blocks by first creating a boolean mask using str.contains
then taking cumulative sum on the mask. then group the column Animal
on these sequential blocks and aggregate using join
QUESTION
My situation is: having .csv file with some columns e.g. name, surname, age, activity, and others
I want to create objects in my relational
database with row
from this file being single object. Column names correspond to model fields and with others
being multiple columns defined by user who creates .csv (those others
land in model's filed comment
separated with commas). Having relational db, base on model_1's
object I create model_2
and model_3
, all with the info from this .csv file.
My project is based on django rest framework
and react
.
Up till now my solution for this was to analize .csv file on with react using FileReader
and readAsArrayBuffer
which did it's job most of the time.
With react
I not only have to analyze the file, but for every row make at least 3 x POSTing with axios. Sequentional posting is not ideal all the time.
My question is: > should files be analyzed on front- or back-end side ?
Heaving it done on the backend side with python
seems a lot easier, but there might be a better solution of which I can't think of.
EDIT: The database I use is
postgresql
.
Csv file size could go up to a 6000 rows. With this many rows I could just completely ram up on posts from react. Also making a single post with file to handle the work to django could also result in a overtime for response from server.
EDIT2:
Example .csv file, might be a 6k rows long or more.
...ANSWER
Answered 2021-Mar-24 at 04:08I would use pandas, as it's easiest to deal with CSV files quickly
QUESTION
I am trying to use https://github.com/dominique-unruh/scala-isabelle for loading and parsing https://isabelle.in.tum.de/library/HOL/HOL-Imperative_HOL/Imperative_Quicksort.html - Imperative_Quicksort.thy. I am using scala-isabelle code from IntelliJ (path to source is C:\Workspace-IntelliJ\scala-isabelle):
...ANSWER
Answered 2021-Mar-05 at 23:46It appeared that 2 theory files (pair.thy and FOL.thy - that I have copied to my IntelliJ workspace) used their respective simpdata.ML includes from their respective directories. So - I have copied simpdata.ML for pair.thy as simpdata_pair.ML and modified include command in pair.thy as:
QUESTION
I wrote a test that calls an api endpoint once and retrieves an etag in the response. After that I do a second call and I am setting the etag value to the if-none-match header. The test looks like the following:
...ANSWER
Answered 2021-Feb-18 at 15:30Yes, the rule is configure
is to "persist" for multiple HTTP calls. So just make this change in the Background
:
QUESTION
ANSWER
Answered 2021-Jan-05 at 03:59While I was not able to accomplish my task using matplotlib I came across a tutorial for plotly and dash while searching for the answer. There is one such wonderful tutorial here:
QUESTION
I have the following model, I want to build the same sequentional network and finally concate the outputs of the two network. Here is my model:
...ANSWER
Answered 2020-Dec-15 at 18:45it is better to use the Functionnal API to handle multiple inputs :
QUESTION
I am writing a code for downloading the historical data for multiple stocks. The code is as given:
...ANSWER
Answered 2020-Dec-10 at 12:30You would better create a dictionary with stocks as keys. See below:
QUESTION
I am testing Apache Ignite cluster using .NET thin client. I've launched 3 ignite instances on local machine using dotnet launcher ("platforms\dotnet\bin\Apache.Ignite.exe"). The instances found each other and took 10800, 10801, 10802 ports automatically. In my test application I create 100 caches with 1000 records in each cache and then try to get elements from caches sequentally. The problem is that client makes requests to different nodes only if I specify 3 adresses manually "127.0.0.1:10800..10801".
...ANSWER
Answered 2020-Jul-10 at 14:15Right now it's required to list all addresses for your connection string.
There is an upcoming Thin client discovery feature, that will track the topology changes and save the snapshot on a client-side. Implementation details: https://cwiki.apache.org/confluence/display/IGNITE/IEP-44%3A+Thin+client+cluster+discovery
According to the ticket, the target release is 2.9. I think, the target date is somewhere in September.
QUESTION
I am learning how to handle data through D3.js and D3's hierarchy at the moment but can't get my head around sorting a map of maps structure.
Given the following dataset
...ANSWER
Answered 2020-Oct-20 at 03:00Since d3.sort :
sorts the children of this node, if any, and each of this node’s descendants’ children https://github.com/d3/d3-hierarchy#node_sort
In order to sort each level independently, one has to compare and sort nodes on equal levels like the following example:
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