simpledb | An Amazon AWS SimpleDB library for Node.js | Runtime Evironment library
kandi X-RAY | simpledb Summary
kandi X-RAY | simpledb Summary
If you're using this library, feel free to contact me on twitter if you have any questions! :) @rjrodger. NOTE: this project follows the Open-Open policy - if you submit a pull request or an issue, you get commit rights, so feel free to merge yourself after asking for feedback from the other contribs. IMPORTANT: YOUR CODE CONTRIBUTIONS (if any) ARE MADE UNDER THE MIT LICENSE. By submitting a pull request or issue you indicate agreement with this condition. Please open an issue to indicate a release should be published to NPM, and we can discuss. Tested on: node 0.12.4.
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simpledb Examples and Code Snippets
Lines of Code : 40
License : No License
Copymodule.exports = {
region: 'us-east-1', // aws region for simpledb & ses
websites: {
// groups of websites can be defined to ping at different intervals.
// the keys of this object must match the 'group' parameter passed to the
// // dbmodels/Comment.js
var ObjectId = require('mongoose-simpledb').Types.ObjectId;
exports.schema = {
creator: { type: ObjectId, ref: 'User' },
blogPost: { type: Number, ref: 'BlogPost' },
url: String,
body: String,
date: { type var SimpleDB = require('winston-simpledb').SimpleDB;
winston.add(winston.transports.SimpleDB, {
// for andychilton
accessKeyId : '...',
secretAccessKey : '...',
awsAccountId : 'xxxx-xxxx-xxxx',
domainName : 'log',
region : am Community Discussions
Trending Discussions on simpledb
QUESTION
I read this answer, which clarified a lot of things, but I'm still confused about how I should go about designing my primary key.
First off I want to clarify the idea of WCUs. I get that WCU is the write capacity of max 1kb per second. Does it mean that if writing a piece of data takes 0.25 seconds, I would need 4 of those to be billed 1 WCU? Or each time I write something it consumes 1 WCU, but I could also write X times within 1 second and still be billed 1 WCU?
Usage
I want to create a table that stores the form data for a set of gyms (95% will be waivers, the rest will be incidents reports). Most of the time, each forms will be accessed directly via its unique ID. I also want to query the forms by date, form, userId, etc..
We can assume an average of 50k forms per gym
Options
First option is straight forward: having the formId be the partition key. What I don't like about this option is that scan operations will always filter out 90% of the data (i.e. the forms from other gyms), which isn't good for RCUs.
Second option is that I would make the gymId the partition key, and add a sort key for the date, formId, userId. To implement this option I would need to know more about the implications of having 50k records on one partition key.
Third option is to have one table per gyms and have the formId as partition key. This seems to be like the best option for now, but I don't really like the idea of having a a large number of tables doing the same thing in my account.
Is there another option? Which one of the three is better?
Edit: I'm assuming another option would be SimpleDB?
...ANSWER
Answered 2021-May-21 at 20:26For your PK design. What data does the app have when a user is going to look for a form? Does it have the GymID, userID, and formID? If so, make a compound key out of that for the PK perhaps? So your PK might look like:
QUESTION
I have the following requirements:
- For every deleted record in RDS we need to archive it into somewhere cheaper on AWS.
- Reduce storage cost
- Not using Glacier
- Context oriented (e.g. a file per table)
- re-import is not a requirement
I'm not an experienced user with AWS, so I'm still a bit lost among the amount of options it has to offer and I'd like to know if you have more ideas to help me clear it out.
Initial thoughts:
- The microservice that deletes the record, might send it to a broker (RabbitMQ for e.g.) and another microservice (let's call it
archiver) will listen to it, write into a file, zip and send to S3. This approach has some technical challenges though: in order to make sense create big files, I need to wait the queue to growth a bit, wrap it into a stream and zip inside S3. The transaction control is very weak as well, since file writing and ack on messages are signal based i.e. I'll remove the messages from the broker just after the file is created. - Add a new column to the "archiveble" tables as "deleted (bool)" and run a separate job fetching only those records and saving them into S3. Discarded they don't want the new microservice with access to other's databases.
- Following the same approach as in the first item, but instead of save into S3, save into a cheaper database. SimpleDB?
ANSWER
Answered 2020-Jul-03 at 16:54option 1, but instead of rabbitmq, write it to a kinesis firehose and direct that to an s3 location - it doesn't get much cheaper or easier than that.
QUESTION
I have tried all of the solutions I could find and still haven't been able to get around this error. The error occurs in the getNotes() section, in its forth line. Also, the getNote() is currently not doing anything, so you don't need to look at that. I directly copied all code from these youtube tutorials, which I then adapted to my needs.
https://www.youtube.com/watch?v=pa_lghjVQVA&t=933s
...Thanks for any help.
ANSWER
Answered 2020-Apr-23 at 23:03I assume that you had been following the video which builds up the Database handling step by step.
I have taken your code, added a Note class so it will compile and played around with it a bit. The code itself works fine, however you had (probably do to incremental changes of the code) deleted the table and it has not been recreated yet. Therefore it will always lead to a crash.
Fortunately this can be solved very easily by:
- Either reinstalling the App
- Or by incrementing the Database version
If you choose to delete and install the App again, you can reset the Database version to 1.
If you choose to increment the Database version, onUpgrade will be called which will delete the table (if it exists) and then recreate it (by calling onCreate).
As someone already mentioned as a comment, SQL should be handled on Android by using Room nowadays. I understand you are probably just starting out, but once you get better you should definitely check out Room. It makes things a LOT easier.
Hope this solves your issue :)
QUESTION
I am using the following version of Intellij Idea
...ANSWER
Answered 2019-Aug-20 at 06:11First make sure it works when running sbt it:test or if you use sub-modules sbt module/it:test
If it doesn't sbt has this great resource: https://www.scala-sbt.org/1.x/docs/Testing.html#Integration+Tests
As a template for a working setup, a build.sbt:
QUESTION
System.ObjectDisposedException HResult=0x80131622 Message=Cannot access a disposed object. Object name: 'SQLiteConnection'.
Source=System.Data.SQLite
I've written a simple repository that uses Dapper and DapperExtensions
When trying to retrieve some results, I get this error when using a Usingblock after the method returns to the view model. When replacing the Using block with Open/Close methods of the connection I don't receive an error. I feels like the issue is very simple, but I just don't see it.
My "base" DB repository
...ANSWER
Answered 2019-Jun-17 at 14:03You need to iterate the result inside the using block:
QUESTION
I am following this mongo's official docker page to configure mongodb to start with authorization enabled along with creating user, password and a database. However, when I spin up docker-compose my nodejs component, it isn't able to connect to mongodb because there are no users created in mongodb side.
docker-compose.yml
...ANSWER
Answered 2019-Jun-15 at 10:16I think I found the problem. node application wasn't able to access to mongo because I need to add authSource=admin parameter which points the database keeps user's credentials. It also explained here
So, the final url will be;
mongodb://simpleUser:123456@mongodb:27017/simpleDb?authSource=admin
QUESTION
I am trying to set up a docker network with simple nodejs and mongodb services by following this guide, however, when building nodejs it fails because it can't connect to mongodb.
docker-compose.yml
...ANSWER
Answered 2019-Jun-13 at 12:59I found the problem which was because of the image node:10 doesn't have nc command installed so it was failing. I switched to image node:10-alpine and it worked.
QUESTION
I am trying to persist a simple bi-directional One to many relationship, but with eclipse link 2.7.4 it fails. Below is the sample code..
Department Entity (Parent) ...ANSWER
Answered 2019-Mar-22 at 09:42The source object must use the
mappedByattribute to define the mapping.
QUESTION
We have a number of (micro) services, some as simple as a single lambda function, and some are full RDS apps. One thing that they all need to do is access an foreign ID key mapping. That is, they all are passed a certain type of ID, but need to included the "name" field associated with that ID in their responses. Basically, just a key/value store.
I could build a separate microservice to manage these mappings (and maybe still will), but that also needs the simple database.
My services don't usually get a huge amount of throughput, but I need them to be performant.
I'd like to keep it cheap, and I'd like it to be as low maintenance as possible.
Basically, I'd like something "Serverless" (i.e. doesn't require an ongoing EC2 instance or RDS instance running), fast, and straightforward to access.
I've thought about just having each "key" be an S3 key, with the value being the object, but that's not super performant when I need to access a bunch at a time. (should I look into redshift spectrum? is that way overkill? does it matter if is?)
I know AWS used to offer simpledb, which is probably basically what I'm after. So what would be closest now?
Thanks for your advice!
...ANSWER
Answered 2019-Jan-25 at 02:00You can use DynamoDB, RDS or S3, I wouldn't recommend SimpleDB.
As for what's "best" I guess it depends on what are the requirements: "better" or "worse" in what regards? ease of development? latency? availability? regional/multi-region? and etc
QUESTION
I have a collection with content:
...ANSWER
Answered 2019-Jan-06 at 00:32The line where you call JSON.parse fails because the argument is not a JSON. If you do JSON.stringify({"_id":ObjectId("5c312200508c979b46d21866")}) you'll see that it can't turn that into a string either. The reason being that JSONs can contain strings, booleans, numbers, and arrays. ObjectId("5c312200508c979b46d21866") doesn't resolve to something the browser knows, even though it makes sense in the shell. However, I think if you pass it as a string, it should work as a query for the db.
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