CoPilot short cuts

This week, started using the enterprise version of Microsoft CoPilot AI companion framework.

Foremost important usage factors on short cuts

• Accept suggestions: Tab
• Reject suggestion: Esc
• Open Copilot suggestions panel: Ctrl + Enter (This panel shows up to 10 suggestions)
• Next suggestion: Alt/Option + ]
• Previous suggestion: Alt/Option + [

NYC earthquake

Yday, the earthquake had a preliminary magnitude of 4.8, which lasted several seconds started at 10:23 a.m. 

The earthquake’s epicenter was 3.7 miles (25 miles from my place) southeast of Califon, New Jersey, according to the USGS (United States Geological Survey).

More than 120,000 responses poured into the USGS’s “Did You Feel It?” tool. Many of those were from reports in densely populated New York City, Boston and Philadelphia.

USGS figures indicate that the quake might have been felt by more than 42 million people.

ALB Keep Alive

Now, Application Load Balancer (ALB) provides flexibility that allows you to configure HTTP client keepalive duration for communication between clients and load balancer. With this feature, you can configure keepalive values to optimize client experience.

The HTTP client keepalive duration value specifies the maximum amount of time that ALB will maintain an HTTP connection with a client before closing the connection. 

The feature will allow customers to gracefully terminate their connections for deployment patterns like Blue/Green or rollbacks, migration of legacy applications, and while evacuating Availability Zones using zonal shift with Amazon Route 53 Application Recovery Controller. 

It is possible to set a value between 60 seconds and 7 days using a load balancer attribute as app clients’ keepalive duration, while the default value is 3600 seconds.

EFS throughput

Yday, Amazon Elastic File System (EFS) has increased the throughput per file system to up to 20 GiB/s of read throughput and up to 5 GiB/s of write throughput.

Amazon EFS provides serverless, fully elastic file storage that makes it simple to set up and run file workloads in the AWS cloud. 

This launch increases the maximum throughput performance for EFS file systems using Elastic Throughput by up to 2x, to 20 GiB/s of read throughput (from 10 GiB/s) and to 5 GiB/s of write throughput (from 3 GiB/s). 

With these higher throughput limits, it is possible to extend EFS’s simple, fully elastic, provisioning-free experience to even more throughput-intensive workloads, such as machine learning, genomics, and data analytics applications. 

AWS Global Accelerator

AWS Global Accelerator is a networking service that improves the performance, reliability and security of your online applications using AWS Global Infrastructure. AWS Global Accelerator can be deployed in front of your Network Load Balancers, Application Load Balancers, AWS EC2 instances, and Elastic IPs, any of which could serve as Regional endpoints for your application.

Since AWS Global Accelerator operates at layer 4 of the OSI model, it can be used with any TCP/UDP application. You pay the Data Transfer-Premium fee of AWS Global Accelerator (on top of Data Transfer Out charges) in addition to an hourly accelerator fee to improve the performance and availability of your applications. 

In a nutshell, Global Accelerator improves the security, reliability, and performance of user-facing applications.

AWS CF policy workflow

 

As outlined in the above diagram, response headers policies do not impact the origin-supplied headers stored in CloudFront’s caching layers. 

Headers configured in the policies are inserted after the response leaves the cache, and before the viewer response event that triggers a function if configured. 

If you have an edge function attached to the same behavior, policy inserted headers will be accessible in your function through the event object listing all the headers associated with the response. 

You can use that functionality by treating the headers generated through a policy as inputs for the function that will impact how the code is executed. This is similar to using environmental variables.

MIME type text html

 

What

Last week, we faced MIME type error after the hosted server upgrade.  

Loading module from “runtime.4c09d92ae7f4a186.js” was blocked because of a disallowed MIME type (“text/plain”).  Strict MIME type checking is enforced for module scripts per HTML spec.

By design, Angular web app is hosted using AWS S3 and CloudFront architecture.

Where

These issues were related to three build files namely main.js, runtime.js and polyfills.js 

Why

Due to recent server upgrade process, Angular build files were uploaded into AWS to render as text/html by default. 

How

Fix is to upload files to s3 and specify the content-type in metadata for js files explicitly as below:

aws s3 sync $DIST_PATH/ s3://$BUCKET_NAME/ --include "*.js" --content-type "application/javascript"