Instacart | 2nd place solution | Machine Learning library

Good Evening, I've been trying to work with the Instacart Dataset as a part of my online classes using Jupyter Notebook (Python); one of the requirements is to merge all of the files (that come mostly with different columns and one or two foreign keys) into one big CSV, like in this case:

https://github.com/gabrielhpr/InstacartClustering/blob/master/InstacartClustering.ipynb

However I don't know how to accomplish that, each file comes with a foreign key so I guess that's the way to go, but how do you match those foreign keys to the correct rows and compile all the CSV files?

I'd like to specify version 5.1.0 of the InstaCart TrueTime library in a Podfile instead of 5.0.3. I think this is the only way to use 5.1.0 since 5.0.3 hasn't been added to the master per https://github.com/instacart/TrueTime.swift/issues/97

(The library is pretty outdated unfortunately.)

According to Add Pod dependency with source to .podspec, the way to do this is add

When I check the external libraries in my Android Studio Project, I see duplicated libraries in different versions.

Is there any way to find out the reason.

I definitely do not add more than one dependency. But not sure, what causes this. This is my build.gradle file;

// Top-level build file where you can add configuration options common to all sub-projects/modules.

I currently have a problem with properly load balance open TCP sessions (created by the RoR application) to dynamically created Aurora Postgresql read-replicas.

The issue with this is when TCP connections are already established to one read-replica, another read-replica is created. After that traffic from the first replica will not be distributed evenly to second one, since TCP connections are already established with first replica.

Attached chart represents current infrastructure setup. Please note that between read-replicas (servers) and application (client) there is a load balancer, provided by the Aurora service, which is based on DNS round-robin.

I've tried pgbouncer, pgpool and multiple Ruby gems (makara, fresh_connection), but none of them were able to load balance nor eliminate long lived TCP connections..

I went through many articles and they helped investigate and confirm the issue; however none of them present a solution.

So... as you can see I've tried obey this problem from application and network perspective, unfortunately without luck. Has anyone had the same problem?

I am using the API truetime-android. https://github.com/instacart/truetime-android

My problem is, if i want to get the values GMT, PST, device time. I have to press the button Get Time Now. I don't like that, I want whenever I open that activity, the three GMT, PST, device time are already have the values, so i don't need to press button Get Time Now the get the values GMT, PST, device time. How to implement that?

Here is my code

I am running a GET on Postman and worked fine with Status 200 ok, but when I pick up the code from Postman and running the Curl/Python on my Mac OS terminal it through a 401 error, can you please help me fix the issue.

curl --location --request GET 'www.instacart.com/v3/containers/costco/next_gen/retailer_information/content/delivery?source=web' --header 'Cookie: _instacart_logged_in=1; build_sha=xxxxxxxxxxxxxx; signup_load_perf_date=xxxxxxxxxxxxxx; amplitude_idundefinedinstacart.com=xxxxxxxxxxxxxx; _gcl_au=xxxxxxxxx; _fbp=fbxxxxxxxx;......'

{"error":{"message":"Unauthorized"},"meta":{"triggered_action":null}}

So yes I freely admit that I am a total noob when it comes to doing web dev beyond basic html code. So hopefully everyone can help, here is my problem:

I am trying to create a page where I display the last record in a certain database so that I can update it with more information after the record has been created. (The displayed information is just so that I update the correct record.) I keep getting the same error message when loading the site:

PHP Fatal error: Uncaught Error: Call to a member function query() on null in /home/****/public_html/ins/end/index.php:32 Stack trace:

0 {main}

thrown in /home/****/public_html/ins/end/index.php on line 32

Here is my conumdrum: I used the same code to pull the information from the database on a seperate page, in which it worked just as expected. All I did is copy and paste that portion of the code from that page into the one that I am now working on. I just update the database name etc. Am I missing something? The Code from the complete page is:

I have implement Truetime in my app. It's works fine but sometimes when i open my app i am not getting the value . I have set daily reward method but if it happens it will be a big problem .

Here is the code , by which i am getting time :