Suggested topic

I am thinking of entering scientific initiation. I graduated in CC, but I'm out of ideas. Any suggestion of problems requiring a solution or suggestion of subject to be developed.

Amazon Web Services – AWS Multiple SNS and Single Lambda Topic

I am creating several lambda messages on several SNS subjects and these messages will be received by another single lambda. Please clarify, is there a performance issue on this model.

The implementation can as below.

Lambda 1 -> SNS Subject 1

Lambda 2 -> SNS Subject 2


Lambda 3 -> SNS Subject N

SNS subject triggers (1 to N) -> Lambda DM

Lambda DM – separate messages according to subscription and send them to API Gateway.

Please give me advice, what are all the problems I might face.

Conditions inside objects | Easy topic |

   public class ContadorLimiteRegreso {
    private int valorActual;
    private int limite;
    private int incr;
    public ContadorLimiteRegreso(int lim) {
        valorActual = 0;
        limite = lim;
        incr = 1;
    public int obtActual() {
        if (valorActual == 0 && incr == -1) {
            incr = 1;
        if (valorActual == limite && incr == 1) {
            incr = -1;
    int ret = valorActual;
    valorActual += incr;
    return ret;

I was asked to create a class that creates an instance of the class (code attached at the top) with a limit of 2 and without using cycles. I must also invoke and print the result of this invocation 7 times so that the output is:


Thanks in advance.

user-centered design – is it possible to separate a topic from the context?

It is a bit theoretical, but I wonder if it is really possible to separate the context from the subject when studying the context of a particular subject.

For example, would there be a significant difference if I worked with UX and studied the background of a water purification plant worker without knowing anything about the chemistry or purification concepts of water beyond the basics? My position is that these "details" and the subject (chemistry) are necessary and are part of this context which is used to inform the user experience and create appropriate interactions and / or interfaces.

How To Publish a Topic {Start a Topic} – MLM & Network Marketing

You must first make a full search to be sure the program you have is not already listed …

Only one subject per program …

All subjects must follow the appropriate format of

Title: Program name – URL

The description: Plans – Payment processors

Title format:

All "Programs to earn money" must have this format in the title:

In the title: program nameurl {not http: // or www. – look at the other topics in the category in which you post and you

can see how it's done …

Format for description:

All Surf sites – Hyip sites – Investment Programs – Cycler / Doublers & most in the Get paid in the region as good as References and MLM

In the description: PlansPayment processors

Thanks to the members, it helps keep our forum clean, professional and easy to read …


What is the best topic for blogging?

Hello friends,

What is the best topic for blogging?

Topic Hd Earn money with Atm2You: – HYIPs

– Sponsorship link
– Stupid Russian site, operated from June 8. Resetting stocks on July 22
– Day-to-day, hourly rate changes can increase and decrease, so be sure to regularly monitor your activities to improvise.
– Buy and sell at any time, cash 24/7 so choose an appropriate time to sell stocks
– The stock rate is at a very low level, a buying opportunity, an increase of 10% / day updated on July 26
– Possibility for anyone with a low capital investment to make a high profit.
– This site I have not recruited ref because the ref of the ref is quite small, so you play, the ref link supports me! I will keep the reference bonus money later as an event for everyone !!
– The last thing I want to let you know is to remind you of the golden rule of investing: invest no more than you can afford. Again, ATM is a disguised form of HYIP, you should always be careful when investing

Gr: https: //

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amazon sqs – AWS JDK 2 create a queue and subscribe to a topic

I'm working on AWS with SNS / SQS and I'm trying to create an SNS subscription on a SQS topic. I'm using AWS Java SDK 2. I can create topics and queues correctly. The problem I am facing is receiving an error when creating the subscription between the subject and the queue. Below is the excerpt from my code:

public SubscribeResponse subscribeQueue(String topicArn, String queueUrl){
    SubscribeRequest subscribeRequest = SubscribeRequest.builder()
    return getAmazonSNSClient().subscribe(subscribeRequest);

Below is the error I receive:

{ "message": "Internal Server Error: Invalid parameter: SQS endpoint ARN (Service: Sns, Status Code: 400, Request ID: dabaeeb3-e77a-5873-861e-b8d0a7bf5c7f)" }

Can someone tell me what I'm doing wrong?

write 1000+ a unique article Writing or post blog in English for any topic for $ 10

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