slideshare | Ruby interface for Slideshare 's API | REST library

I'm using mssql v6.2.0 in a Lambda that is invoked frequently (consistently ~25 concurrent invocations under standard load).

I seem to be having trouble with connection pooling or something because I keep having tons of open DB connections which overwhelm my database (SQL Server on RDS) causing the Lambdas to just time out waiting for query results.

I have read the docs, various similar questions, Github issues, etc. but nothing has worked for this particular issue.

• I did learn that pooling is possible across invocations due to the fact that variables outside the handler function are shared across invocations in the same container. This makes me think I should see just a few connections for each container running my Lambda, but I don't know how many that is so it's hard to verify. Bottom line is that pooling should keep me from having tons and tons of open connections, so something isn't working right.
• There are several different ways to use mssql and I have tried several of them. Notably I've tried specifying max pool size with both large and small values but got the same results.
• AWS recommends that you check to see if there's already a pool before trying to create a new one. I tried that to no avail. It was something like pool = pool || await createPool()
• I know that RDS Proxy exists to help with situations like this, but it appears it isn't offered (at this time) for SQL Server instances.
• I do have the ability to slow down my data a bit, but this has a slight impact on the performance of the product as a whole, so I don't want to do that just to avoid solving a DB connections issue.
• Left unchecked, I saw as many as 700 connections to the DB at once, leading me to think there's a leak of some kind and it's maybe not just a reasonable result of high usage.
• I didn't find a way to shorten the TTL for connections on the SQL Server side as recommended by this re:Invent slide. Perhaps that is part of the answer?

I'm currently trying to create a simple website using Django, with ckeditor for form fields. I would also like to integrate some Mathematics into my forms, hence why I downloaded the Mathematical Formulas plugin for ckeditor.

I followed this tutorial to implement the plugin but MathJax doesn't work.

This is what I added to my settings.py file

I have a category hierarchy that products are attached to. That category hierarchy is saved as an adjacency list. Products can be attached to any category nodes at any level. The category hierarchy is a tree.

I would like to...

1. get the name of every level 3 category...
2. per product...
3. where that product is attached to any level 3 category node...
4. or a descendant of a level 3 node.

I know I can materialize the hierarchy, and from that I've been able to satisfy all requirements but the last. I always lose some products or categories.

Given

Below function is returning None despite having return statement. This seems to be a simple problem but i am unable to figure out the solution being a python beginner. The findurls function works perfectly but the second function -"murls" seems to have a problem.

The aim of the code below is to loop through an object of regexes and test a provided link(url) against each regex in the sites2embedRegex object. The current solution I have works, but my QUESTION is is there a better and more efficient way of writing this code? Thanks

I have a array of objects as a json file, I used the objects to display them on the list, When getting to details of that item it has a related items also. I want to show related items for this item Heres the json file

We want to monitor Kafka and have two specific requirements: use headless tools and store performance metrics in a CSV file. Following Gwen Shapira series [1] I am leaning towards request latencies and kafka.tools.JmxTool to start with.

Setup: Kafka 0.11, exposed JMX, headless metric collection tools

Q: what JMX beans provide metrics as presented on [2], likely per Broker: “request queue”, “request local”, “response remote”, “response queue”, “response send”?

[1] slides
https://www.slideshare.net/ConfluentInc/metrics-are-not-enough-monitoring-apache-kafka-and-streaming-applications/

[2] desired Kafka metrics

Sencha announced on the Roadshow in 2017 that it should be possible to use es6/2015 class syntax. The slides of the session are located here -> https://de.slideshare.net/senchainc/modernizing-the-ext-js-class-system-and-tooling. But I dont get it to work.

Should it be possible with latest version of open tooling and ext.js 7?

If yes, how can i npm-install or reference to the correct ext.js (es6) modules needed in the import statements (f.e. import { Ext, define } from "@extjs/core") ?

Are there any examples of an running ext.js app with es6 syntax?

THX in advance!

We are implementing a REST API over our CQRS services. We of course don't want to expose any of our domain to users of the REST APIs.

However, a key tenant of CQRS is that the read models generally correspond to a specific view or screen.

1. With that being the case, it seems logical that the resources in our REST API, will map virtually 1:1 with the read / view models from our queries (where the queries return a DTO containing all the data for the view). Technically this is exposing a part of our domain (the read models - although returned as DTOs). In this case, this seems to be what we want. Any potential downsides to being so closely coupled?

2. In terms of commands, I have been considering an approach like: https://www.slideshare.net/fatmuemoo/cqrs-api-v2. There is a slide that indicates that commands are not first class citizens. (See slide 26). By extension, am I correct in assuming that the DTOs returned from my queries will always be the first class citizens, which will then expose the commands that can be executed for that screen?

Thanks