What is the best way to keep track of the most recent 100 items?

Question

What is the best way to keep track of the most recent 100 items?

In Angular, I want to store the last 100 items to display. Currently, I am using an array and inserting items with 'array.push'. If this method is not effective for this scenario, what alternative approach can I take?

Here is a snippet of the code:

        $interval(function()
        {
            $http.get("...")
              .success(function(){
                for(var index in response.logs)
                {
                   $scope.logs.push(response.logs[index]);
                } 
            
              })
        }, 1000);

<div ng-repeat="log in logs">{{log.time}}:&nbsp;&nbsp;{{log.log}}</div>

javascript angularjs

Answer 1

Answer №1

To extract a portion of an array, you can utilize the .slice method:

var numbers = [10,20,30,40,50];
var selectedValues = numbers.slice(-3); // Get the last 3 values

// selectedValues will be [30,40,50]

Answer 2

To extract a portion of an array, you can utilize the .slice method:

var numbers = [10,20,30,40,50];
var selectedValues = numbers.slice(-3); // Get the last 3 values

// selectedValues will be [30,40,50]

Answer 3

Answer №2

In this scenario, I have observed that using an array is not the most efficient approach. The logs are increasing at a rate of 1 second per interval. When the array reaches a certain length, the browser starts to slow down and eventually freezes. To address this issue, I have opted for implementing a circular buffer solution known as Cbuffer.

var cbuffer = new CBuffer(100);      // initialize empty buffer with size of 100
$interval(function()
{
    $http.get("...")
        .success(function(){
        for(var index in response.logs)
        {
            cbuffer.push(response.logs[index]);
            $scope.logs = cbuffer.toArray();
        } 
    })
}, 1000);

Answer 4

In this scenario, I have observed that using an array is not the most efficient approach. The logs are increasing at a rate of 1 second per interval. When the array reaches a certain length, the browser starts to slow down and eventually freezes. To address this issue, I have opted for implementing a circular buffer solution known as Cbuffer.

var cbuffer = new CBuffer(100);      // initialize empty buffer with size of 100
$interval(function()
{
    $http.get("...")
        .success(function(){
        for(var index in response.logs)
        {
            cbuffer.push(response.logs[index]);
            $scope.logs = cbuffer.toArray();
        } 
    })
}, 1000);

What is the best way to keep track of the most recent 100 items?

Answer №1

Answer №2

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