connection_pool | Generic connection pooling for Ruby
kandi X-RAY | connection_pool Summary
kandi X-RAY | connection_pool Summary
Generic connection pooling for Ruby. MongoDB has its own connection pool. ActiveRecord has its own connection pool. This is a generic connection pool that can be used with anything, e.g. Redis, Dalli and other Ruby network clients.
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Trending Discussions on connection_pool
QUESTION
I am a fairly new to web development and have not given much thought to error. But today I noticed something I have to use json.stringyfy()
to see the entire error object. Also message
key is not shown in statement 2 but when I print error.message
I get a message instead of undefined
.
"message" is not even a key(check statement 4) but still logging error.message logs a value(typeof(error.message)
is string
) .
ANSWER
Answered 2022-Feb-28 at 18:48"message" is not even a key(check statement 4)
It is, but Object.keys
is designed to list enumerable properties, and message
is not enumerable.
In the ECMAScript specification, we see in the section on the Error constructor that the constructor creates its message (and other properties) with the procedure:
Perform CreateNonEnumerableDataPropertyOrThrow(O, "message", msg).
Other -- custom -- properties can of course be added to Error objects by JavaScript code, which explains why other properties are listed by Object.keys()
.
As to the output of console.log
: the console
API implementation has a lot of freedom on how to display objects -- lot's of differences can be found between implementations.
To also output those non-enumerable properties, use
QUESTION
I'm creating a todos app with MERN stack, and in an attempt to create personal todos for each user, I found this error:
...ANSWER
Answered 2022-Feb-07 at 23:40Try to remove explicitly adding _id
to schema with value of mongoose.Types.ObjectId()
. Remove these lines from schema definition.
QUESTION
I have been facing some problem while updating the data in the db using mongoose, Therefore thanks in advance for the help.
I have been sending some data from a dynamic form that contains different set of fields each time... but when i update the array in the db it changes those fields.
This was my controller function earlier:-
...ANSWER
Answered 2022-Jan-08 at 11:04$set
will replace a new value for the key. If you use the 3rd value then the $set
will replace the 3rd value, use $push
instead of $set
operator.https://docs.mongodb.com/manual/reference/operator/update/push/
QUESTION
So I was trying to test my node server if it can handle insertion of duplicate data to mongodb and apparently it can't.
Here's the code:
...ANSWER
Answered 2022-Jan-05 at 10:02The solution is only to add a check in your handler, like so:
QUESTION
Basically I have a table like this:
movieId name 1 White chicks 2 Inception 3 The Avengers: Endgame 4 Avatar: The Last Air BenderMy job is to retrieve all relevant movies based on a substring of the movie name. For example, if a user enters a substring such as "av" (e.g., they enter "http://localhost:5000/search/movies?name=av"), they will find movies like The Avengers and Avatar.
Because the assignment requires the use of a Model-View-Controller(MVC) design with a pool of open connections, I have created 3 separate python files (a model, a controller and a database). For full information, this is my database file (shown below):
...ANSWER
Answered 2021-Nov-28 at 17:23Use the below SQL statement:
QUESTION
i am using ELK stack 7.15.2 jdk-11.0.12 jre1.8.0_311
...ANSWER
Answered 2021-Nov-22 at 13:20First confirm that TCP is enabled, else try to enable it with the below steps
- Open SQL Server Configuration Manager
- Expand “SQL Server Network Configuration” and click on “Protocols for MSSQLSERVER”
- Right click on “TCP/IP” and choose “Enable”
- Click “OK” on the Warning that the service will have to be restarted
- Click on “SQL Server Services”
- Right click on “SQL Server (MSSQLSERVER) and choose “Restart”
Confirm your jdbc driver path below and specify it in the connection too
QUESTION
This is my Code
...ANSWER
Answered 2021-Oct-25 at 13:44I have my code below and works as is. A few things:
- Install dependencies again if needed
- I am using the sample airbnb db they provide in Atlas service on cloud.mongodb.com
- Change username:0987654321 to your own username and password where 'username' is the username and 0987654321 is the password.
- Run() works fine locally but it's not straight forward to have a local method start a server endpoint and keep track of it or vice versa. For that you need good chaining
So only USE the run method to test locally and it works fine or use the express endpoints to test via your app client side or curl or postman and that works too independently.
Heres my whole server file:
QUESTION
We are using an event-based system where are using postgres database to store the events audit. Currently to store latest entry for any event we are using postgres MATERIALIZED VIEW. For any event that modifies data we update the main event audit table and also refresh MATERIALIZED VIEW, but that is a very time consuming. We use the below python code to refresh view but it just drops the old view and recreates it which time consuming
...ANSWER
Answered 2021-Oct-18 at 03:59A materialized view is not a bad solution, but only if you can regard it as "point in time" (beginning of business day, or within last 3 hours, ...). It is not a good solution for an "at this moment" requirement. Yours seems to be the latter.
Your best option would be just creating a view that gets the latest data. If that is not viable, due to audit event size, then need to look elsewhere. I am not a fan of creating a table to contains the latest data. That would be replicating the data, and replicated data inevitability winds up being different. But a slight twist comes to mind: Create a table that contains only the event id and the event_audit log id, maintaining only the last audit id. Without your full table definition (ddl) I can only show a skeletal setup, but you should get the idea.
QUESTION
I am perplexed about the error in my docker-compose config. I am adding redis alongside sidekiq to the existing rails app that uses docker-compose but I am failing hard on attempts to make the containers communicate with each other. I have tried several different options and looked at pretty much every reasonable topic on SO that touches this subject but I keep failing on basically the same thing. Here is my current config (or at least the relevant parts of it) and error:
docker-compose.yml ...ANSWER
Answered 2021-Oct-13 at 20:17You are probably not exposing redis port to the sidekiq service try exposing this in docker compose. This probably may work.
QUESTION
I have an issue with a Sidekiq (6.2.1) and Redis (4.4.0) running with docker-compose. I found nothing useful on internet, Redis is up and running, it also seems that Sidekiq can connect but then, Sidekiq exits at start because of some kind of concurrency:
...ANSWER
Answered 2021-Oct-05 at 08:27After rebooting my computer, it now works...
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