4 FREE SERVICE TO UPTIME THE WEBSITE

If you have only one website and always have access to it, you will know when the site will be inaccessible (also known as downtime). But if you have many websites at once and have websites that do not regularly visit, then surely you will not know whether the website server is stable or not.

Checking and tracking uptime is also a way for you to self-assess your hosting provider or know when your website is failing to fix the problem. Manual testing is also good, but it's better to use the following free uptime checking services. How do these services work?
Most of the services in this article support you monitor the ups and downs of your website or server in various ways such as checking through HTTP protocol, port, keyword and website speed through pinging. it. Often, the most common testing method is HTTP. When using this protocol, it sends a query to your website within a specified time (5 minutes for example) and returns the resulting header for analysis. For example, try using an HTTP Header Response tool like http://www.webconfs.com/http-header-check.php to test thachpham.com and you will get the following content:

twelfth HTTP / 1.1 200 OK => Server => nginx <a href="https://thachpham.com/series/centminmod-va-wordpress" data-wpel-link="internal"> centminmod </a> Content-Type => text / html; charset = UTF-8 Vary => Accept-Encoding Set-Cookie => visid_incap_30800 = 0VlsuCTgSr6gxL3zw1vua4N8GVQAAAAAQUIPAAAAAADUSl8CfTM4a33NuMBHhAwt; expires = Fri, 16 Sep 2016 07:10:18 GMT; path = /; Domain = .thachpham.com Pragma => no-cache Date => Wed, 17 Sep 2014 12:20:20 GMT X-Page-Speed ​​=> 1.8.31.4-4009 Cache-Control => max-age = 0, no-cache, no-store (710) X- <a href = "https://thachpham.com/hosting-domain/cdn-la-gi-va-khi-nao-nen-dung-cdn-cho-website.html" data-wpel-link = " internal "> CDN </a> => Incapsula Connection => close See the HTTPD / 1.1 200 OK section? Number 200 means the status code of the website and 200 means the website is working well. There are also some status codes such as: 404 - Page not found 403 - No access 500 - Connection error 301 - redirected page
You can see more here to understand. Therefore, these tools will check if your website returns a 200 code. If it receives a status code other than 200 then there will be an email or sms alerting you so you know which fixes it right away. 5 best service uptime check
1. Uptime Robot
uptimerobots-dashboard Highest check-in time: 5 minutes Amount allowed: 50 sites Check protocol: HTTP / HTTPS, PING, IP, PORT, KEYWORD. Notifications: Email, SMS, RSS, Twitter, API. Paid Package: None This is a very simple free uptime checker tool. It supports you to check the uptime of the website / server through 4 different protocols and allow the system to check the website every 5 minutes. Each time there is a problem with the uptime, it will send you an email notification so you can know which handle is up to date. uptimerobots-email The ability to announce uptime, it supports many ways to notify such as email, SMS (not support Vietnam), Twitter, API, Web Hook, ... of course is completely free, but will limit up to 50 websites. In addition to the uptime check, it also helps you keep track of the speed of your website over time with very easy to understand charts. uptimerobot-responsetime 2. StatusCake
Highest check time: 1 minute / time Quantity allowed: Unlimited Check protocol: HTTP / HTTPS, TCP, ICMP Ping, DNS Test, SMTP Test, Minecraft Test. Notifications: Email, SMS, API, Smartphone App. Paid Package: Yes Compared to UptimeRobot, StatusCake will have more functionality and better display because it's late delivery, and StatusCake also supports free or paid credit card charges if you use special features such as SMS , and especially have RUM TEST support to test the speed, more comprehensive uptime. statuscake-tests When looking at report details, it is also more intuitive, with enough information. statuscake-testdetail For RUM Test you will get extremely detailed statistics such as average speed in each browser, in each country, server connection speed, speed of each page, .... completely free. If you have a smartphone, you can install StatusCake for Android for easier inspection and no cost for SMS Credit because it supports sending messages in the phone. Monitor.Us monitor-test Highest check time: 30 minutes / visit Quantity allowed: unlimited Checking protocols: HTTP / HTTPS, TCP, ICMP Ping, DNS Test, SMTP Test, SSH, Server Monitor (CPU, RAM, Disk, ...), Am
Cloud azon test .... Message: Email Paid Package: Yes There is the advantage of supporting multiple test protocols, but for full use you need to pay a small fee, but the free package has support for tracking unlimited websites and common protocols, including support. Website speed tester in different countries. The downside is that there are no SMS notifications and up to 30 minutes of new updates, as well as 24-hour data only. 4. Port-Monior
portmonitor-dashboard Highest check time: 1 minute / time Number of permits: 2 Checking protocols: HTTP / HTTPS, TCP, ICMP Ping, DNS Test, SMTP Test Message: Email Paid Package: Yes Port Monitor only allows tracking 2 websites in the free package and only supports email but it is that it checks for 1 minute time. Epilogue
These four services have different advantages and disadvantages, but I personally see StatusCake as the least disadvantage, support many outstanding features and ability to save logs up to 2 years. That is why I chose StatusCake as the main website inspection service for so long.