traffic | Javascript simulator of Braess 's paradox

by bit-player JavaScript Version: Current License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | traffic Summary

traffic is a JavaScript library typically used in Simulation applications. traffic has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Javascript simulator of Braess's paradox.

Support

Quality

Security

License

Reuse

Support

traffic has a low active ecosystem.

It has 49 star(s) with 4 fork(s). There are 5 watchers for this library.

It had no major release in the last 6 months.

traffic has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of traffic is current.

Quality

traffic has 0 bugs and 0 code smells.

Security

traffic has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

traffic code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

traffic is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

traffic releases are not available. You will need to build from source code and install.

traffic saves you 272 person hours of effort in developing the same functionality from scratch.

It has 658 lines of code, 0 functions and 8 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed traffic and discovered the below as its top functions. This is intended to give you an instant insight into traffic implemented functionality, and help decide if they suit your requirements.

Step 1 .
Select a route to the map .
iterate over an object
Toggle selection mode .
Synchronizes the mouse control .
Launch the next car loop
reset the model
calculate the trip counter
initialize the carlink
Opens the button

Get all kandi verified functions for this library.

traffic Key Features

No Key Features are available at this moment for traffic.

traffic Examples and Code Snippets

No Code Snippets are available at this moment for traffic.

Community Discussions

Trending Discussions on traffic

Fixing git HTTPS Error: "bad key length" on macOS 12

Unable to log egress traffic HTTP requests with the istio-proxy

Kubernetes NodePort is not available on all nodes - Oracle Cloud Infrastructure (OCI)

Why do I have to edit /etc/hosts just sometimes when using nginx-ingress controller and resources in my local k8s environment?

I have a dataset in which i have two columns with time in it but the dat

GKE Internal Load Balancer does not distribute load between gRPC servers

How / why does behavior of SQL*Plus BREAK depend on column order?

Terraform: Inappropriate value for attribute "ingress" while creating SG

Firebase minInstances is ignored

How to write file checking code for best performance

QUESTION

Fixing git HTTPS Error: "bad key length" on macOS 12

Asked 2022-Mar-29 at 17:34

I am using a company-hosted (Bitbucket) git repository that is accessible via HTTPS. Accessing it (e.g. git fetch) worked using macOS 11 (Big Sur), but broke after an update to macOS 12 Monterey. *

After the update of macOS to 12 Monterey my previous git setup broke. Now I am getting the following error message:

...

ANSWER

Answered 2021-Nov-02 at 07:12

Unfortunately I can't provide you with a fix, but I've found a workaround for that exact same problem (company-hosted bitbucket resulting in exact same error). I also don't know exactly why the problem occurs, but my best guess would be that the libressl library shipped with Monterey has some sort of problem with specific (?TLSv1.3) certs. This guess is because the brew-installed openssl v1.1 and v3 don't throw that error when executed with /opt/homebrew/opt/openssl/bin/openssl s_client -connect ...:443

To get around that error, I've built git from source built against different openssl and curl implementations:

install autoconf, openssl and curl with brew (I think you can select the openssl lib you like, i.e. v1.1 or v3, I chose v3)
clone git version you like, i.e. git clone --branch v2.33.1 https://github.com/git/git.git
cd git
make configure (that is why autoconf is needed)
execute LDFLAGS="-L/opt/homebrew/opt/openssl@3/lib -L/opt/homebrew/opt/curl/lib" CPPFLAGS="-I/opt/homebrew/opt/openssl@3/include -I/opt/homebrew/opt/curl/include" ./configure --prefix=$HOME/git (here LDFLAGS and CPPFLAGS include the libs git will be built against, the right flags are emitted by brew on install success of curl and openssl; --prefix is the install directory of git, defaults to /usr/local but can be changed)
make install
ensure to add the install directory's subfolder /bin to the front of your $PATH to "override" the default git shipped by Monterey
restart terminal
check that git version shows the new version

This should help for now, but as I already said, this is only a workaround, hopefully Apple fixes their libressl fork ASAP.

Source https://stackoverflow.com/questions/69734654

QUESTION

Unable to log egress traffic HTTP requests with the istio-proxy

Asked 2022-Feb-11 at 10:45

I am following this guide.

Ingress requests are getting logged. Egress traffic control is working as expected, except I am unable to log egress HTTP requests. What is missing?

...

ANSWER

Answered 2022-Feb-07 at 17:14

AFAIK istio collects only ingress HTTP logs by default.

In the istio documentation there is an old article (from 2018) describing how to enable egress traffic HTTP logs.

Please keep in mind that some of the information may be outdated, however I believe this is the part that you are missing.

Source https://stackoverflow.com/questions/71018977

QUESTION

Kubernetes NodePort is not available on all nodes - Oracle Cloud Infrastructure (OCI)

Asked 2022-Jan-31 at 14:37

I've been trying to get over this but I'm out of ideas for now hence I'm posting the question here.

I'm experimenting with the Oracle Cloud Infrastructure (OCI) and I wanted to create a Kubernetes cluster which exposes some service.

The goal is:

A running managed Kubernetes cluster (OKE)
2 nodes at least
1 service that's accessible for external parties

The infra looks the following:

A VCN for the whole thing
A private subnet on 10.0.1.0/24
A public subnet on 10.0.0.0/24
NAT gateway for the private subnet
Internet gateway for the public subnet
Service gateway
The corresponding security lists for both subnets which I won't share right now unless somebody asks for it
A containerengine K8S (OKE) cluster in the VCN with public Kubernetes API enabled
A node pool for the K8S cluster with 2 availability domains and with 2 instances right now. The instances are ARM machines with 1 OCPU and 6GB RAM running Oracle-Linux-7.9-aarch64-2021.12.08-0 images.
A namespace in the K8S cluster (call it staging for now)
A deployment which refers to a custom NextJS application serving traffic on port 3000

And now it's the point where I want to expose the service running on port 3000.

I have 2 obvious choices:

Create a LoadBalancer service in K8S which will spawn a classic Load Balancer in OCI, set up it's listener and set up the backendset referring to the 2 nodes in the cluster, plus it adjusts the subnet security lists to make sure traffic can flow
Create a Network Load Balancer in OCI and create a NodePort on K8S and manually configure the NLB to the ~same settings as the classic Load Balancer

The first one works perfectly fine but I want to use this cluster with minimal costs so I decided to experiment with option 2, the NLB since it's way cheaper (zero cost).

Long story short, everything works and I can access the NextJS app on the IP of the NLB most of the time but sometimes I couldn't. I decided to look it up what's going on and turned out the NodePort that I exposed in the cluster isn't working how I'd imagine.

The service behind the NodePort is only accessible on the Node that's running the pod in K8S. Assume NodeA is running the service and NodeB is just there chilling. If I try to hit the service on NodeA, everything is fine. But when I try to do the same on NodeB, I don't get a response at all.

That's my problem and I couldn't figure out what could be the issue.

What I've tried so far:

Switching from ARM machines to AMD ones - no change
Created a bastion host in the public subnet to test which nodes are responding to requests. Turned out only the node responds that's running the pod.
Created a regular LoadBalancer in K8S with the same config as the NodePort (in this case OCI will create a classic Load Balancer), that works perfectly
Tried upgrading to Oracle 8.4 images for the K8S nodes, didn't fix it
Ran the Node Doctor on the nodes, everything is fine
Checked the logs of kube-proxy, kube-flannel, core-dns, no error
Since the cluster consists of 2 nodes, I gave it a try and added one more node and the service was not accessible on the new node either
Recreated the cluster from scratch

Edit: Some update. I've tried to use a DaemonSet instead of a regular Deployment for the pod to ensure that as a temporary solution, all nodes are running at least one instance of the pod and surprise. The node that was previously not responding to requests on that specific port, it still does not, even though a pod is running on it.

Edit2: Originally I was running the latest K8S version for the cluster (v1.21.5) and I tried downgrading to v1.20.11 and unfortunately the issue is still present.

Edit3: Checked if the NodePort is open on the node that's not responding and it is, at least kube-proxy is listening on it.

...

ANSWER

Answered 2022-Jan-31 at 12:06

Might not be the ideal fix, but can you try changing the externalTrafficPolicy to Local. This would prevent the health check on the nodes which don't run the application to fail. This way the traffic will only be forwarded to the node where the application is . Setting externalTrafficPolicy to local is also a requirement to preserve source IP of the connection. Also, can you share the health check config for both NLB and LB that you are using. When you change the externalTrafficPolicy, note that the health check for LB would change and the same needs to be applied to NLB.

Edit: Also note that you need a security list/ network security group added to your node subnet/nodepool, which allows traffic on all protocols from the worker node subnet.

Source https://stackoverflow.com/questions/70893487

QUESTION

Why do I have to edit /etc/hosts just sometimes when using nginx-ingress controller and resources in my local k8s environment?

Asked 2022-Jan-03 at 16:11

Not sure if this is OS specific, but on my M1 Mac, I'm installing the Nginx controller and resource example located in the official Quick Start guide for the controller. for Docker Desktop for Mac. The instructions are as follows:

...

ANSWER

Answered 2022-Jan-03 at 16:11

I replicated your issue and got a similar behaviour on the Ubuntu 20.04.3 OS.

The problem is that NGINX Ingress controller Local testing guide did not mention that demo.localdev.me address points to 127.0.0.1 - that's why it works without editing /etc/hosts or /etc/resolve.conf file. Probably it's something like *.localtest.me addresses:

Here’s how it works. The entire domain name localtest.me—and all wildcard entries—point to 127.0.0.1. So without any changes to your host file you can immediate start testing with a local URL.

Also good and detailed explanation in this topic.

So Docker Desktop / Kubernetes change nothing on your host.

The address demo2.localdev.me also points to 127.0.0.1, so it should work as well for you - and as I tested in my environment the behaviour was exactly the same as for the demo.localdev.me.

You may run nslookup command and check which IP address is pointed to the specific domain name, for example:

Source https://stackoverflow.com/questions/70531119

QUESTION

I have a dataset in which i have two columns with time in it but the dat

Asked 2021-Dec-22 at 17:00

Unnamed: 0     Created Date             Closed Date            Agency   Agency Name  Complaint Type Descriptor  Location Type   Incident Zip    Address Type    City    Landmark    Status  Borough
2869    2869    10/30/2013 09:14:47 AM  10/30/2013 10:48:51 AM  NYPD    New York City Police Department Illegal Parking Double Parked Blocking Traffic  Street/Sidewalk 11217.0 PLACENAME   BROOKLYN    BARCLAYS CENTER Closed  BROOKLYN
23571   23571   10/25/2013 02:33:54 PM  10/25/2013 03:36:36 PM  NYPD    New York City Police Department Noise - Park    Loud Music/Party    Park/Playground 10000   PLACENAME   NEW YORK    CENTRAL PARK    Closed  MANHATTAN
41625   41625   10/22/2013 09:33:56 PM  10/24/2013 05:37:24 PM  TLC Taxi and Limousine Commission   For Hire Vehicle Complaint  Car Service Company Complaint   Street  11430   PLACENAME   JAMAICA J F K AIRPORT   Closed  QUEENS
44331   44331   10/22/2013 07:25:35 AM  10/25/2013 10:40:35 AM  TLC Taxi and Limousine Commission   Taxi Complaint  Driver Complaint    Street  11430   PLACENAME   JAMAICA J F K AIRPORT   Closed  QUEENS
46913   46913   10/21/2013 05:03:26 PM  10/23/2013 09:59:23 AM  DPR Department of Parks and Recreation  Dead Tree   Dead/Dying Tree Street  11215   PLACENAME   BROOKLYN    BARTEL PRITCHARD SQUARE Closed  BROOKLYN
47459   47459   10/21/2013 02:56:08 PM  10/29/2013 06:17:10 PM  TLC Taxi and Limousine Commission   Taxi Complaint  Driver Complaint    Street  10031   PLACENAME   NEW YORK    CITY COLLEGE    Closed  MANHATTAN
48465   48465   10/21/2013 10:44:10 AM  10/21/2013 11:17:47 AM  NYPD    New York City Police Department Illegal Parking Posted Parking Sign Violation   Street/Sidewalk 11434   PLACENAME   JAMAICA PS 37   Closed  QUEENS
51837   51837   10/20/2013 04:36:12 PM  10/20/2013 06:35:49 PM  NYPD    New York City Police Department Noise - Park    Loud Music/Party    Park/Playground 10031.0 PLACENAME   NEW YORK    JACKIE ROBINSON PARK    Closed  MANHATTAN
51848   51848   10/20/2013 04:26:03 PM  10/20/2013 06:34:47 PM  NYPD    New York City Police Department Noise - Park    Loud Music/Party    Park/Playground 10031.0 PLACENAME   NEW YORK    JACKIE ROBINSON PARK    Closed  MANHATTAN
54089   54089   10/19/2013 03:45:47 PM  10/19/2013 04:10:11 PM  NYPD    New York City Police Department Noise - Park    Loud Music/Party    Park/Playground 10000.0 PLACENAME   NEW YORK    CENTRAL PARK    Closed  MANHATTAN
54343   54343   10/19/2013 01:27:43 PM  10/28/2013 08:42:12 AM  DOT Department of Transportation    Street Condition    Rough, Pitted or Cracked Roads  Street  10003.0 PLACENAME   NEW YORK    UNION SQUARE PARK   Closed  MANHATTAN
55140   55140   10/19/2013 02:02:28 AM  10/19/2013 02:19:55 AM  NYPD    New York City Police Department Noise - Vehicle Car/Truck Music Street/Sidewalk 11368.0 PLACENAME   CORONA  WORLDS FAIR MARINA  Closed  QUEENS
57789   57789   10/18/2013 11:55:44 AM  10/23/2013 02:42:14 PM  TLC Taxi and Limousine Commission   Taxi Complaint  Driver Complaint    Street  11369.0 PLACENAME   EAST ELMHURST   LA GUARDIA AIRPORT  Closed  QUEENS
63119   63119   10/17/2013 06:52:37 AM  10/25/2013 06:49:59 PM  TLC Taxi and Limousine Commission   Taxi Complaint  Driver Complaint    Street  11430.0 PLACENAME   JAMAICA J F K AIRPORT   Closed  QUEENS
66242   66242   10/16/2013 01:56:24 PM  10/22/2013 03:09:11 PM  TLC Taxi and Limousine Commission   Taxi Complaint  Driver Complaint    Street  11369   PLACENAME   EAST ELMHURST   LA GUARDIA AIRPORT  Closed  QUEENS
66758   66758   10/16/2013 11:52:43 AM  10/16/2013 04:35:34 PM  NYPD    New York City Police Department Vending Unlicensed  Park/Playground 10036   PLACENAME   NEW YORK    BRYANT PARK Closed  MANHATTAN
66786   66786   10/16/2013 11:42:23 AM  10/18/2013 04:57:04 PM  TLC Taxi and Limousine Commission   Taxi Complaint  Insurance Information Requested Street  10003   PLACENAME   NEW YORK    BETH ISRAEL MED CENTER  Closed  MANHATTAN
66809   66809   10/16/2013 11:36:54 AM  10/16/2013 12:34:23 PM  NYPD    New York City Police Department Traffic Congestion/Gridlock Street/Sidewalk 11430   PLACENAME   JAMAICA J F K AIRPORT   Closed  QUEENS
67465   67465   10/16/2013 09:14:35 AM  10/16/2013 12:43:06 PM  NYPD    New York City Police Department Traffic Drag Racing Street/Sidewalk 11367   PLACENAME   FLUSHING    QUEENS COLLEGE  Closed  QUEENS
72424   72424   10/15/2013 12:22:00 AM  10/21/2013 12:16:15 PM  TLC Taxi and Limousine Commission   Taxi Complaint  Driver Complaint    Street  11217   PLACENAME   BROOKLYN    BARCLAYS CENTER Closed  BROOKLYN
75531   75531   10/14/2013 10:59:20 AM  10/14/2013 03:09:51 PM  NYPD    New York City Police Department Vending In Prohibited Area  Park/Playground 10000   PLACENAME   NEW YORK    CENTRAL PARK    Closed  MANHATTAN
77918   77918   10/13/2013 03:16:03 PM  10/13/2013 03:25:45 PM  NYPD    New York City Police Department Noise - Park    Loud Music/Party    Park/Playground 10000   PLACENAME   NEW YORK    CENTRAL PARK    Closed  MANHATTAN
78048   78048   10/13/2013 01:06:02 PM  10/21/2013 10:20:21 AM  TLC Taxi and Limousine Commission   Taxi Complaint  Driver Complaint    Street  11369   PLACENAME   EAST ELMHURST   LA GUARDIA AIRPORT  Closed  QUEENS
78352   78352   10/13/2013 05:14:33 AM  10/16/2013 01:42:42 PM  TLC Taxi and Limousine Commission   For Hire Vehicle Complaint  Car Service Company Complaint   Street  11217   PLACENAME   BROOKLYN    BARCLAYS CENTER Closed  BROOKLYN
78383   78383   10/13/2013 03:50:02 AM  10/13/2013 05:03:13 AM  NYPD    New York City Police Department Noise - Vehicle Car/Truck Music Street/Sidewalk 11368   PLACENAME   CORONA  WORLDS FAIR MARINA  Closed  QUEENS
79078   79078   10/12/2013 09:53:17 PM  10/13/2013 02:52:07 AM  NYPD    New York City Police Department Noise - Park    Loud Music/Party    Park/Playground 10011   PLACENAME   NEW YORK    WASHINGTON SQUARE PARK  Closed  MANHATTAN
84489   84489   10/10/2013 07:16:16 PM  10/10/2013 10:29:16 PM  NYPD    New York City Police Department Noise - Park    Loud Music/Party    Park/Playground 11215   PLACENAME   BROOKLYN    PROSPECT PARK   Closed  BROOKLYN
84518   84518   10/10/2013 07:02:29 PM  10/10/2013 10:29:16 PM  NYPD    New York City Police Department Noise - Park    Loud Music/Party    Park/Playground 11215   PLACENAME   BROOKLYN    PROSPECT PARK   Closed  BROOKLYN
84688   84688   10/10/2013 05:39:19 PM  10/10/2013 10:29:17 PM  NYPD    New York City Police Department Noise - Park    Loud Music/Party    Park/Playground 11215   PLACENAME   BROOKLYN    PROSPECT PARK   Closed  BROOKLYN
84695   84695   10/10/2013 05:37:04 PM  10/10/2013 10:30:19 PM  NYPD    New York City Police Department Noise - Park    Loud Music/Party    Park/Playground 11215   PLACENAME   BROOKLYN    PROSPECT PARK   Closed  BROOKLYN
88812   88812   10/09/2013 09:17:15 PM  10/23/2013 02:15:21 PM  TLC Taxi and Limousine Commission   Taxi Complaint  Driver Complaint    Street  11430   PLACENAME   JAMAICA J F K AIRPORT   Closed  QUEENS
89205   89205   10/09/2013 06:01:48 PM  10/09/2013 09:04:26 PM  NYPD    New York City Police Department Vending Unlicensed  Park/Playground 10000   PLACENAME   NEW YORK    CENTRAL PARK    Closed  MANHATTAN
89382   89382   10/09/2013 04:53:01 PM  10/18/2013 08:35:02 AM  DOT Department of Transportation    Public Toilet   Damaged Door    Sidewalk    11238   PLACENAME   BROOKLYN    GRAND ARMY PLAZA    Closed  BROOKLYN
89734   89734   10/09/2013 03:13:23 PM  10/09/2013 05:10:45 PM  NYPD    New York City Police Department Noise - Park    Loud Music/Party    Park/Playground 10036   PLACENAME   NEW YORK    BRYANT PARK Closed  MANHATTAN
93990   93990   10/08/2013 06:14:15 PM  10/09/2013 04:00:59 PM  TLC Taxi and Limousine Commission   Taxi Complaint  Driver Complaint    Street  10003   PLACENAME   NEW YORK    BETH ISRAEL MED CENTER  Closed  MANHATTAN
99407   99407   10/07/2013 03:56:11 PM  10/08/2013 07:04:14 AM  DPR Department of Parks and Recreation  Overgrown Tree/Branches Traffic Sign or Signal Blocked  Street  11430.0 PLACENAME   JAMAICA J F K AIRPORT   Closed  QUEENS
99847   99847   10/07/2013 02:33:21 PM  10/09/2013 02:36:42 PM  TLC Taxi and Limousine Commission   Taxi Complaint  Driver Complaint    Street  10036.0 PLACENAME   NEW YORK    PORT AUTH 42 STREET Closed  MANHATTAN
100073  100073  10/07/2013 01:36:02 PM  10/09/2013 09:56:55 AM  TLC Taxi and Limousine Commission   Taxi Complaint  Driver Complaint    Street  10024.0 PLACENAME   NEW YORK    MUSEUM NATURAL HIST Closed  MANHATTAN
101013  101013  10/07/2013 10:05:18 AM  10/09/2013 03:36:23 PM  TLC Taxi and Limousine Commission   Taxi Complaint  Driver Complaint    Street  10017.0 PLACENAME   NEW YORK    GRAND CENTRAL TERM  Closed  MANHATTAN
104020  104020  10/06/2013 02:58:47 PM  10/07/2013 12:11:16 PM  TLC Taxi and Limousine Commission   For Hire Vehicle Complaint  Car Service Company Complaint   Street  11430.0 PLACENAME   JAMAICA JFK Closed  QUEENS
106118  106118  10/05/2013 03:24:47 PM  10/05/2013 04:20:34 PM  NYPD    New York City Police Department Noise - Park    Loud Music/Party    Park/Playground 10000.0 PLACENAME   NEW YORK    CENTRAL PARK    Closed  MANHATTAN
106499  106499  10/05/2013 11:52:13 AM  10/07/2013 08:00:28 AM  DOT Department of Transportation    Public Toilet   Dirty/Graffiti  Sidewalk    11369.0 PLACENAME   EAST ELMHURST   LA GUARDIA AIRPORT  Closed  QUEENS

...

ANSWER

Answered 2021-Dec-22 at 17:00

You can first start by converting your date columns to datetime type using pd.to_datetime():

Source https://stackoverflow.com/questions/70447276

QUESTION

GKE Internal Load Balancer does not distribute load between gRPC servers

Asked 2021-Nov-16 at 14:38

I have an API that recently started receiving more traffic, about 1.5x. That also lead to a doubling in the latency:

This surprised me since I had setup autoscaling of both nodes and pods as well as GKE internal loadbalancing.

My external API passes the request to an internal server which uses a lot of CPU. And looking at my VM instances it seems like all of the traffic got sent to one of my two VM instances (a.k.a. Kubernetes nodes):

With loadbalancing I would have expected the CPU usage to be more evenly divided between the nodes.

Looking at my deployment there is one pod on the first node:

And two pods on the second node:

My service config:

...

ANSWER

Answered 2021-Nov-05 at 14:01

Google Cloud provides health checks to determine if backends respond to traffic.Health checks connect to backends on a configurable, periodic basis. Each connection attempt is called a probe. Google Cloud records the success or failure of each probe.

Based on a configurable number of sequential successful or failed probes, an overall health state is computed for each backend. Backends that respond successfully for the configured number of times are considered healthy.

Backends that fail to respond successfully for a separately configurable number of times are unhealthy.

The overall health state of each backend determines eligibility to receive new requests or connections.So one of the chances of instance not getting requests can be that your instance is unhealthy. Refer to this documentation for creating health checks .

You can configure the criteria that define a successful probe. This is discussed in detail in the section How health checks work.

Edit1:

The Pod is evicted from the node due to lack of resources, or the node fails. If a node fails, Pods on the node are automatically scheduled for deletion.

So to know the exact reason for pods getting evicted Run kubectl describe pod and look for the node name of this pod. Followed by kubectl describe node that will show what type of resource cap the node is hitting under Conditions: section.

From my experience this happens when the host node runs out of disk space. Also after starting the pod you should run kubectl logs -f and see the logs for more detailed information.

Refer this documentation for more information on eviction.

Source https://stackoverflow.com/questions/69769567

QUESTION

How / why does behavior of SQL*Plus BREAK depend on column order?

Asked 2021-Nov-11 at 07:49

Background

I'm familiar with databases but have never used Oracle in particular. In the process of trying to help someone with a homework assignment, I've hit a snag trying to understand the behavior of the BREAK command. In particular, the results of using the BREAK command seem to depend on the order of the columns in the query I'm using, which as far as I can tell is not reflected in the documentation in any way.

Setup for examples

I created a table where there are a couple of different colors, each with a few items of that color, like so:

...

ANSWER

Answered 2021-Nov-11 at 07:49

The behaviour of BREAK in your example is not right. I update this post thanks to @Littlefoot, and is due to the fact that you are using a SqlDeveloper, a java tool not intended for this kind of reporting.

I created your table and insert the records in both databases, then running the reports you did.

Demo 12cR2

Source https://stackoverflow.com/questions/69923625

QUESTION

Terraform: Inappropriate value for attribute "ingress" while creating SG

Asked 2021-Nov-02 at 04:36

I'm creating a Security group using terraform, and when I'm running terraform plan. It is giving me an error like some fields are required, and all those fields are optional.

Terraform Version: v1.0.5

AWS Provider version: v3.57.0

main.tf

...

ANSWER

Answered 2021-Sep-06 at 21:28

Since you are using Attributes as Blocks you have to provide values for all options:

Source https://stackoverflow.com/questions/69079945

QUESTION

Firebase minInstances is ignored

Asked 2021-Oct-13 at 07:57

Our goal is to set a minimum instance count for our firebase cloud function to be able to handle unexpected bursts of traffic. We've followed these instructions to set a minInstance count of 3. After deploying the update, I can see in the UpdateFunction log that minInstance value is set to 3.

However, the Active instances count in the cloud function dashboard regularly falls below 3 (see image below). Does "active" in this metric only count instances which are being executed and doesn't count idling instances? Or does this actually mean that the minInstance value is being ignored?

...

ANSWER

Answered 2021-Oct-13 at 07:57

As Cloud Functions is stateless it may initialize the execution environment from scratch which is called Cold Start. Cold Starts may take a significant amount of time and could increase the application latency. To reduce the number of Cold Starts, Cloud Functions for Firebase allows setting a minimum number of instances by specifying minInstances by following this document. This will keep the specified number of instances ready or warm to serve the requests which will not go through cold starts.

Now in the Cloud Functions page of Google Cloud Console, the metrics Active Instances means the number of instances that are currently serving the request as mentioned here.

Setting up minInstances does not mean that there will always be that much number of Active Instances. Minimum instances are kept running idle (without CPU allocated), so are not counted in Active Instances.

Source https://stackoverflow.com/questions/69533753

QUESTION

How to write file checking code for best performance

Asked 2021-Oct-07 at 09:31

Is there any appreciable difference, in terms of speed on a low-traffic website, between the following snippets of code?

...

ANSWER

Answered 2021-Oct-07 at 08:50

It will be unnoticeably slower on a low-traffic website; but there is no reason to perform that check anyway if you're going to get the contents if it exists, since file_get_contents() already performs that check behind-the-scenes, returning false if the file doesn't exist.

You can even put the call to file_get_contents() directly inside the condition:

Source https://stackoverflow.com/questions/69477949

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install traffic

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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