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Global server load balancing (GSLB) is the act of load balancing across globally distributed servers. This allows distribution of traffic to be performed efficiently across application servers that are dispersed geographically.

Enterprises can find open source global server load balancing solutions online, but the highest performing GSLB services are generally integrated with application delivery solutions with commercial support.

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Yes. The VMware NSX Advanced Load Balancer delivers modern load balancing, including an entirely innovative way of handling global server load balancing functionality (GSLB) for enterprise customers. VMware NSX Advanced Load Balancer supports:

Once the RTT metrics are populated, the appliance distributes subsequent client requests based on the least RTT. The appliance also periodically shares the RTT metrics with the NetScaler appliances deployed in other server farms.

Site Metric Exchange: This is a polling exchange model. The GSLB site metric exchange interval is one second. Site information consists of the current number of connections and current packet rate for a load balancing virtual server. For example if a site has a configuration for the services of another site, then after every one second, the first site requests the other site for the status of the GSLB services. The other site responds with the state and the other load details.

So I'm from southeast Asia, I tried to play with couple guys from global server but I couldn't add their names because different server when I tried to change the server I only have 4 options : southeast Asia , ( Hong Kong Macau Taiwan ), Japan and South Korea how do I solve this pls help ?

Increased global network traffic highlights the need to scale and manage apps globally in order to balance traffic across an entire network. Send users to the most-available, best-performing data center or cloud to maintain availability, speed, and security. GSLB can route users to the closest server available to them based on metrics you establish.

Set policies and parameters to direct global network traffic to the appropriate data center or cloud. With topology and geolocation-based resolution and routing, GSLB can ensure app availability for users who may be impacted by accessibility policies in their country.

GSLB addresses slowness in apps by intelligently distributing network traffic across many connected servers located in multiple Points of Presence (PoPs) dispersed around the world. It is used to achieve:

Above reference architecture is an illustration of latency-based routing. The end user request from Berlin to example.ngrok.app would first be sent to a DNS server. The DNS Server returns the IP address of the PoP with the lowest latency which in this case is eu-fra-1. Connection is then established between the end user and this PoP.

ngrok agents with no region specified on startup will automatically create a connection to the region with the lowest latency. This ensures requests made against that specific agent have the shortest connection time possible. In the example above, the agent deployed in San Francisco first connects to a DNS server. The DNS Server returns the IP address of the PoP with the lowest latency which in this case is us-cal-1. Connection is then established between the agent and this PoP.

Reference architecture above illustrates support for geo-failover. The end user request from Berlin to example.ngrok.app would first be sent to a DNS server. The DNS Server returns the IP address of the PoP that is available, which in this case is eu-fra-1. Connection is then established between the end user and this PoP.

Google isn't just a software company. The Hardware Operations team is responsible for monitoring the state-of-the-art physical infrastructure behind Google's powerful search technology. As an Operations Technician, you'll install, configure, test, troubleshoot and maintain hardware (like servers and its components) and server software (like Google's Linux cluster). You'll also take on the configuration of more complex components such as networks, routers, hubs, bridges, switches and networking protocols. You'll participate in or lead small project teams on larger installations and develop project contingency plans. A typical day involves manual movement and installation of racks, and while it can sometimes be physically demanding, you are excited to work with infrastructure that is at the cutting-edge of computer technology.

As Data Center Technician, you'll deploy and maintain Google's advanced Data Center Server and Network Infrastructure by installing, configuring, testing, troubleshooting, and repairing hardware and server software. You'll also take on the configuration of more complex components (e.g., networks, routers, bridges, and switches). You will participate in or lead local project teams on larger installations and develop project contingency plans.

In Plesk Multi Server, some of the settings located in Tools &Settings are global, and some are local. This means that you can applyserver settings to all nodes in the infrastructure or to an individualnode.

If all the settings in a section are global, Plesk displays a notesaying that they will be applied to service nodes. The changes are thenapplied to all connected service nodes and you receive a notificationabout the results of this operation.

Some sections in Tools & Settings contain both global and localsettings. Usually, only one or two settings in a section cannot beapplied globally. Plesk Multi Server displays a warning and lists thesettings that will be applied only to the management node.

For example: settings in Server Settings (Restrict Creation ofSubzones or Server Statistics Settings) apply globally exceptFull hostname.

Our global content delivery network (CDN) serves as a gateway for all incoming application layer traffic, which is then balanced among multiple data centers to ensure optimal performance. Rerouting occurs on the CDN level and is free of TTL (Time to Live)-induced delays.

And want to help you be fast too. We help our clients move fast and expand infrastructure globally as needed without prolonged negotiations with individual service providers, complicated contracting procedures, and complexity of global logistics. With us you will be able to focus on growing and expanding your core business and underlying IT infrastructure will never be a constraint for you.

Retain and grow your customer base with high availability and business continuity for applications and services. Ensure your competitive advantage with better application and user experience by optimizing cloud and on-premises data centers and maximizing IT efficiency by intelligently monitoring site health, proximity, and response time. Our advanced global server load balancing solution gives you visibility and control across any hybrid cloud environment.

a) GSLB based on Application Delivery Controller (ADC): traditional load-balancers and ADCs see all traffic from the client to the servers hosting the application, they are in-line, thus have a real-time view of the application availability and performance from a network standpoint. When using multiple ADCs on different datacenters to serve the same application, the ADCs can set up specific communication for exchanging statistics on the servers hosting the application. GSLB can be enabled on such clustered-ADC infrastructures as soon as the DNS zone containing the application FQDN is managed by the ADC service. Standard distribution scenarios are based on round robin and availability. Some topology mapping can also be introduced in order to direct specific client subnets to a preferred datacenter. In more advanced scenarios, the redirect of the client traffic can be performed based on the delay calculated by the network during the first step of the communication with the ADC, or a specific monitoring protocol can be established towards the client (e.g. ICMP).

In the above scenario, the role of the global server load balancer would be to simply detect the failure at the active site and divert requests to the passive sites automatically. This could be seen as an automation of a manual process of changing the IP address in the DNS configuration for an FQDN. However, the real benefits of GSLB come into play when companies maintain multiple active sites serving the same content, so synchronizing the sites in real time becomes important.

For Global Server Load Balancing, websites and services are hosted on different servers at different geo-locations, so users are ideally routed to an online server. Autonomous DNS GSLB servers perform health checks to determine the status of a server. In specific circumstances the GSLB may provide an incorrect answer for a specific user because of a WAN routing failure at the user location.

The health check is based on network protocols like ICMP, UDP, TCP or HTTPS, but can also integrate more advanced checking status using API calls, RPC or SNMP. When associated with an ADC, information could be shared using a specific proprietary protocol to obtain information on the health of the application such as the number of servers online in a pool, the number of active sessions or users connected.

The record that is returned by the GSLB Controller in response to a DNS query has a time to live (TTL) value of 10 seconds, meaning that the DNS servers across the Internet need to request the IP address of the site again if the record is older than 10 seconds. If a site becomes unavailable, it is removed from the list of returned IP addresses, the caches update quickly, and traffic is directed to a healthy site. 2351a5e196