A DNS Failover Service – Is it right for you?

By

Over the years, DNS Failover has become a very popular service primarily due to the fact that it is relatively inexpensive and fairly easy to deploy and manage. But is it the right solution for your organization? In this article, we’ll outline what DNS failover is and provide an overview of the benefits and appropriate uses for this type of technology.

What is DNS Failover?

First, we must define what DNS failover is before trying to understand whether or not it offers benefits. Simply put, DNS failover is an add-on feature of a DNS Service and is a system that consists of two main components. The first component monitors servers or devices behind IP addresses in an effort to determine their state, e.g. up or down. Second, it uses the server state information to automatically update the IP address associated with a particular DNS record, such as an ‘A’ record, ‘AAAA’ record or otherwise. It may consist of other components designed to deliver email or SMS alerts in the event that an outage is detected or changes are made, but any successful DNS Failover solution must consist of at least the first two essential elements.

Common Applications for DNS Failover

So now that we know what DNS Failover is, what is the most common use for it and what applications can benefit from this method of automating DNS updates?

Perhaps the most obvious use that comes to mind is to control web traffic. Failing over between redundant web servers is a very common implementation, and is probably the most frequently used application. From the failover system’s perspective, it really doesn’t matter where the two IP addresses are, so long as they are different. So because of this, it could be used to failover between two different servers at the same datacenter, servers at different datacenters (even across the globe) or it could be even the same server with two different network connections, each having their own IP address, for example a server at a corporate office with one IP on each of two different T1 lines.

Naturally, what can be done for web servers can also be done for mail servers, FTP servers, streaming media servers or VoIP servers, just to name a few. Essentially, if it has an IP address and can be monitored externally, DNS Failover can route traffic to it when it is up, and redirect to another server when it is down.

Common Features

Most well thought out DNS Failover implementations should have at least a few basic features. First, and probably paramount to failover success, is monitoring. The more advanced the monitoring feature-set, the better. This allows you to detect outages as accurately as possible. At a minimum, we would expect functionality to fine-tune the monitors and to run them from multiple geographic locations in order to create an accurate picture for when failover actually needs to occur. Of course, it should probably go without saying that the monitoring and alerting functionality should be able to send alerts via email, SMS or both.

Another important feature, in our opinion, is some flexibility in how traffic is routed. The most common traffic routing configurations are sequential or round-robin. Sequential allows you to list servers in the order you want traffic to be delivered so that if the server with a priority of 1 goes down, it sends traffic to the server with a priority of 2 and so forth. Round-robin publishes a DNS record for every one of the active and available servers so that traffic is distributed amongst them as evenly as possible. When one goes down or becomes otherwise unavailable, it is simply removed from the pool allowing traffic to continue being distributed amongst the remaining server(s).

And finally, you’ll probably want a feature that prevents the automatic re-announcement of a server’s IP address when it comes back online. In the case of a server providing static web content, re-adding may not pose a problem, but in the case of a database server requiring resynchronization, this little feature is critical.

Limitations of DNS Failover

The biggest limitation when using DNS Failover for application switching is the ability to quickly detect an outage and make a change that will actually propagate the Internet in relatively short order to seamlessly redirect users, both current and future. Even the best DNS Failover solutions that accurately detect an outage and update DNS quickly and accurately still leave customers at the mercy of a well known problem called caching. This is an extremely tough issue to resolve because it is not within the DNS Failover service providers control.

Caching issues are created when ISPs ignore TTL values, or they can be caused by something as simple as default Internet browser settings which are configured to cache images in order to improve page load times. The shortest compliant TTL value is 60 seconds, and for some ISPs this is simply too short. AOL, for example, is known to ignore low TTL values and substitute them with something much higher, say 15 minutes, for example. But other than those ISPs who ignore TTL values, a 60 second setting in theory *should* propagate the Internet relatively quickly.

Is there anything better?

Depending on your application, Cloud Load Balancing might be a better fit. That, of course, should be dictated by your specific requirements for uptime, flexibility for balancing traffic among servers and how critical the need to avoid caching created by TTL avoidance or just plain old browser settings. Cloud Load Balancing is similar in design, but offers extremely powerful traffic management solutions similar to hardware load balancers (except on a global scale) for serious online organizations.

Sea and Sand and Sea Glass

By

One of the best parts of using sea glass in my hobby of jewelry making is being able to be on the beach. I love the smell of salt water and the feel of sand beneath my feet. When I am going sea glassing I tell my husband that I’m going for sea and sand and sea glass. Here is an article from Caribbean News Network that talks about where to find sea glass in the Caribbean.

I enjoy glassing around my home on the eastern shore of Maryland, but I have to admit that I enjoy it even more when the warm Caribbean breezes are caressing me and I’m being warmed by the sun. While I have found some lovely sea glass near my home I have found some unbelievably gorgeous sea glass while in the Caribbean.

There are quite a few beaches well known in the Caribbean for good sea glassing. Some of them are Antonios Beach, Puerto Rico, Abaco Islands, Bahamas, and Building Bay, Bermuda. If you are able to visit any of these beautiful beaches you are lucky. If you are able to find sea glass on them you are even more lucky! And, if you’re like me and are in it for the sea and sand then you’ll be in heaven!

Drug Rehab that Works

By

Most people do not feel the need to go into rehab until they are experiencing negative consequences. There are legal, marital and occupational consequences. Some people are beginning to have financial problems because of addiction, while others are having drug-related health problems.

Loss of Control:

All of the previously-mentioned scenarios all have one thing in common — there is a loss of control This is when drug use moves from abuse to addiction.

A non-addicted person will stop abusing drugs when he begins to have consequences in his life. Even though you might think that there are a lot of addicts in society today, only 5% of the people who use and abuse drugs end up becoming addicts. The loss of control happens when a person continues to use drugs despite the consequences.

Dangerous Ground:

As the drug user’s foundation is cracking, he continues to use drugs. He is in constant torment mentally. This is because he is experiencing a phenomenon known as “characterological conflict” or the violating of his own morals.

Inner Turmoil:

Even though many addicts look and act like they have an antisocial personality disorder, this is usually not the case. They do what they have to do to get the drug. But they are filled with self-loathing and hate for themselves. In the rehab world, this self-hatred is called “serious emotional pain.” Now they have to use just to feel somewhat normal. They are fully addicted.

Drug-Seeking:

The addict’s life centers around getting the drug and using it. This becomes an endless cycle of characterological conflict, serious emotional pain, and frenetic drug seeking behavior. Addicts are good at covering up their emotional pain and inner turmoil. They use the amount of the drug that it takes for them to “check out” mentally and not have to deal with their addiction.

Rehab:

When the addict finally enters rehab, it is not because he wants to. He has to. He has been mandated there by the court system, the prison, his job, his wife, his kids, or some other highly influential factor. He is backed against the wall. Addicts want to find a way to use without experiencing consequences. But they don’t want to be drug free. Most addicts surround themselves with a wall of defenses so high that they don’t actually see a real reason to quit.

Two Major Areas of Treatment:

In rehab, the recovering addict’s mental mismanagement (denial, wall of defenses, tec.) and his emotional disorder (serious emotional pain) are dealt with simultaneously. These are treated with lectures, reading assignments, cognitive behavioral therapy, group therapy and private counseling. Some addicts need to be on antidepressants and mood stabilizers in order to be in a mental state to be able to assimilate and act on what they are learning in rehab.

If both areas of addiction are treated concurrently, the addict stands a good chance of recovering. Of course, there are other important issues dealt with in rehab, but the first two are the most important.

For more information, go to Treatment Centers

Creating the Excellent Holiday Checklist

By

For most folks, the holidays is generally not a substitute for traffic congestion and also stress regarding work. On the contrary, people consider escaping the routine. They point out scheduled conditions that enslave them or place pressure within the leisurely routines. A holiday getaway is a dream that a lot of people work hard and help save for. Therefore, when you finally have it planned, it must be perfect. For that perfect trip, you need to policy for said excellence in advance. Holiday break trips require a lot of preparing. This short article is intended to help you in your own for the perfect vacation. These are tips on creating a holiday checklist. All the below components are the ingredients for a great holiday!

Given and Visas are two of the most critical things when scheduling a holiday. In case you are leaving the nation, an individual must have these. Tickets may also be needed (these must be reserved in advance). If you happen to be taking a cruise, any kind of tickets and documents tend to be absolutely essential, unless you are planning to be considered a stowaway! Vaccination data will also be needed. If you need help creating the perfect holiday checklist, keep reading.

The medical history statement and corresponding insurance documents are required, in case traveling by yourself. People who traveling should also possess debit and credit cards on-hand too. Of course, travelers’ checks could be a good plan as well. But it is far better to understand that taking cash only has become a mistake. Items like this can be shed or thieved very easily, particularly when travelling abroad.

Your driving license should also end up being packed. When you plan to drive when traveling, this is a good factor to have. Plus it also is a photo ID. Backup copies of cruise tickets, airline tickets as well as passport should preferably become stored in various bags. This can ensure you possess at least one replicate of everything required if you misplace your original.

Roberts Liardon is Amongst the Modern Greats in Church History

By

If you’ve not yet discovered Roberts Liardon, you’re just one associated with the few, particularly if you’re of the church-going sort of individual. Mr. Roberts Lairdon happens to be an internationally acknowledged Christian Church commander in addition to a humanitarian through the Roberts Liardon Ministries, that’s pursuits around the globe. Liardon also is a prolific public presenter, a great writer a pacesetter inside the spirit filled church, and is a dedicated church historian. He is currently the creator for the God’s Generals compilation of publications about the fantastic males of history church. This individual examines the particular revivalists, individuals who prevailed inside their objectives in addition to people who failed. Viewers might find God’s work all through the lifestyles of several of the most useful Christian commanders to actually live, men for example Charloes Spurgeon, Jonathan Edwards, George Whitefield, your Wesley brothers and much more.

Everywhere he often goes, along with that he dedicates himself to, Liardon drives people to restore the enthusiasm from their own salvation as well as to live their own life for the Lord. Regardless of whether you’re settling into a chair to go through one of his fantastic works or perhaps snagging certain motivation on the move from your most recent Roberts Liardon Twitter publishing, it’s all appropriate, conditioning, as well as points modern-day saints firmly in direction of the true One who spoke the entire world into being plus who reigns/rules nevertheless right now, in spite of all the difficulties, battle as well as heartache this particular fallen globe generally seems to embrace. Any individual stumbling within his walk, any person feeling discouraged by simply that ancient prince involving darkness, will certainly, simply by joining with one of the numerous provided Liardon outreaches, will be virtually no uncertainty about to find the restored braveness and also motivation and durability for an additional stage of their spiritual voyage.

Equally as Samuel has been reserved for your Lord from a early age, so also was Roberts Liardon did too. Before he reached his twenties, he already ended up being on the way to become one of the better Christian speakers and authors in the last century. These days he’s ministered God’s presence in more than 125 nations around the world and is accepted as having made not just excellent works involving church historical past inside authored form, but additionally, among the best selling DVD sequence with Christian historical past in the form of the actual God’s Generals DVD collection. Similar to the guides, he will take with the everyday life of these fantastic adult men lessons that readers may also use today inside their existing Christian walk as well as ministry.

Guidelines to Growing Facebook Close Friends

By

A person have to be able to assume almost everything spreads, and also nothing an individual do socially ought to end up being inconsistent along with your specialist life. Which becomes possibly more significant as level of privacy concerns develop, exacerbated simply by the great data we are now spreading about each of our lives. Granted that and so many on the web companies are usually funded by simply advertising, this specific means is actually those individuals are concerned in gathering your files by supplying you a thing to employ and put in data with no your agreement for functions you rarely know. Send Barbara Dell on Facebook a friend request if you want to increase your friends list.

And so how could you very best take handle of your own online popularity? You are able to send Barbara Dell a friend request or read on. Whether youre doing this yourself or even outsourcing typically the process, making a great deal of very good content will be key. And also, you’ll would like to decide on your software wisely. Exactly how can an individual tell in the event that you need to be making use of Facebook, Pinterest, Tumblr and Twitter? It’s extremely hard to be able to tell as well as it needs data regarding your targeted audience. Commence with just where your existing and possible customers just like to gather together. If you are trying in order to reach males, don’t move on Pinterest, which is usually known intended for its woman following, as well as if youre trying to be able to do some thing medical, seldom do the idea on Tumblr, which constructed its popularity among teenage years and 20-somethings. On the whole, target on having interesting substance to the particular people who else matter, inside a spot where these are likely to be able to see this.

Many marketers realize how in order to increase Facebook or Twitter page loves through Facebook’s paid advert platform, yet there tend to be plenty involving ways to be able to grow your current likes with no spending virtually any money. This particular article may walk anyone through numerous efficient along with free techniques to enhance your current FB page loves. Some regarding these techniques will emphasis on growing your organic and natural post achieve – simply because the far more your articles get enjoyed and discussed, the a lot more your get to and rankings increase. Along with ultimately, this specific is precisely what will prospect to the actual organic expansion of your own personal page. To determine more on Barbara Dell, click the link.

Use pictures as some sort of regular portion of your own content technique. Despite precisely what you might have noticed, captivating along with applicable pictures can nevertheless be the great approach to enhance engagement as well as reach upon your webpage and articles. Contact Barbara Dell in order to discover more.

How to Find a Testosterone Booster That Works

By

Many people suffer from low testosterone and wonder what they can do to fix it. While they may have considered supplements, it can be difficult to find one that’s really going to work. It’s important to learn as much as possible about the various supplements before making a decision. That way, they can ensure they’re going to be spending their money on a product that’s going to give them the results they really need.

The person will want to check out the ingredients in the various supplements they’re considering. It’s important to only look at supplements that offer all natural ingredients. Fillers, artificial flavorings, and additives can detract from the effectiveness of the product and may cause side effects. The person may want to ensure the product is produced in the US as well to ensure product quality control is high. This is the best way to find a product that’s going to be safe to use. A product based on scientific research is also a good idea since it has a much higher chance of working well.

Once the person has found a few supplements they’re interested in, it’s a good idea to read free testosterone booster reviews. Professional reviews will give all the details about the various supplements, compare them to similar supplements, and rate them on how well they work. This is a good way to get an overview of the various supplements available. Consumer reviews are also available and can give the person a good idea of how many people saw results when taking the supplement regularly and how quickly they saw results. This can give an overview of how effective it actually is and the person may be able to find tips on how others got the best results quickly.

Low testosterone can cause many different problems, from a lack of energy to an inability to see results with diet and exercising. Taking a testosterone booster can alleviate these symptoms so a person will feel more energized, gain muscle easier, and feel better overall. In order to get the best results, however, the person will want to ensure they find the right product. By taking a look at the ingredients and reading reviews the person can feel confident they’ll be purchasing a product that really works.

Just What is Hair Loss and is it Treatable?

By

Typically the expression alopecia relates to any variety of thinning hair, hair decline or perhaps baldness within just about any area regarding the entire body. Baldness appears to end up being a far more particular period amongst people, because it normally appertains to hair damage on the particular scalp. Nonetheless, the idea can easily suggest hair damage in any kind of part associated with the human body. Throughout the vast majority of instances hair loss is the normal method of maturing, and not necessarily a illness.

Simply because this is not really seen while life-threatening in order to doctors this is generally disregarded. This kind of is sad simply because hair loss could cause really serious stress throughout a few men and women, with a few far achieving psychological consequences. In a number of situations, hair loss might be any effect regarding some healthcare treatment, specially cancer cure drugs, especially when the actual hair reduction is typically temporary. Right now there are a number of types involving alopecia. For instance, Alopecia areata is hair burning occurring within patches at any place on the particular body.

Hair is dropped from a few or almost all areas involving the physique, generally via the top of the head. As this leads to balding spots about the top of the head, especially in the course of its earlier phase, the idea is at times referred for you to as “spot baldness”. To find out more regarding this health-related problem, look at these lucinda ellery reviews.

The Many Functions of Coconut Oil and The Reasons Why Many Consider It As a Magic Product

By

Are you wanting fuller tresses? Do you ever dream of possessing facial skin that seems more youthful and a lot more vibrant? It may be you are dieting, yet absolutely nothing you perform has a tendency to work. Should you struggle with any one of these troubles, you might want to explore coconut oil. Though this product has been around for quite some time today, consumers are just now learning about its numerous advantages. As an example, you will get bright, magnificent tresses by making use of the oil. Add a handful of oil on the tresses before going to bed, put a towel around your tresses and then go to sleep like you typically do. When you awaken the following morning, clean the hair and get amazed at just how outstanding it appears. If you wish to shed weight, include one to two tablespoons of coconut oil in your cup of herbal tea or hot drinking water. Allow the oil to melt and drink the drink twenty minutes before a meal. Doing this helps to lessen your appetite so you eat less. You can even rub the oil on the cuticles to help your fingernails increase and keep the cuticles smooth and soft. Other individuals make use of the oil to treat canker sores and some individuals rub it on their child as a all-natural baby treatment. Many people, nevertheless, wish to discover coconut oil and aging, as many people talk about this oil as being the anti-aging miracle remedy. Coconut oil works as an anti-fungal, anti-viral and also anti-microbial product, and it might be used for a wide array of purposes, as it is extremely delicate. With the aid of this oil, collagen production is actually stimulated that may help prevent potential future facial lines as well as to decrease the appearance of existing fine lines. It can be used as a body scrub when blended with sugar to keep your skin gentle as well as soft and this helps you to deal with areas of dehydrated skin, like around the heels of the feet. Pay a visit to This Resource for more information concerning the benefits of using this oil and to get a lot of coconut oil recipes. As soon as men and women learn just how many things this oil can be of assistance with, it will be found in bathrooms throughout the country promptly.

The Real Purpose To Stick To A Healthy Diet

By

Many people attempt to eat much healthier to allow them to shed weight. They might remove whole daily food groups simply because they see them as harmful or perhaps attempt to reduce the quantity of food they eat every single day. But, this can end up having the opposite impact. Rather than losing weight and feeling far healthier, they could notice they may have difficulty losing the weight, they don’t have enough energy, and they end up getting sick easily.

If a person decreases the food groups they eat from and also the amount of food items they consume, they may not be obtaining the correct amount of nutrients and vitamins. This could hurt their general health, their brain functionality, their own energy, and their immune system. Alternatively, they ought to direct attention to eating an appropriate diet that features all the recommended food groups in moderation. It is not necessary to stop eating specific food groups or perhaps reduce the amount of meals you take in to small quantities. Instead, adhere to a recommended portion of a number of different foods.

The proper portion of foods to consume is dependent upon a person and also how many meals they are having every day. However, if a person eats foods that are a lot more filling, they’re going to realize they won’t be required to take in as much to be able to feel full. It may also help to actually eat more meals per day as they aren’t going to be as famished when it’s time to eat once again. Eating a number of fruit and veggies, as an example, will help someone truly feel fuller longer since they are a lot more filling than unhealthy foods. Additionally it is beneficial to eat a variety of food products. While the individual may choose to reduce the amount of carbohydrate food or sugar, they shouldn’t remove them from their diet completely. These food products are usually advantageous, therefore it’s crucial that you eat a modest volume so the body obtains all the vitamins and minerals it needs.

In the event that you’d like to learn a lot more about what you are able to implement at home to eat healthier, go to this web link. Click This Link to pay a visit to This Page to see how a proper diet is likely to help you more than solely by helping you shed weight. You will find a large number of benefits and by simply using the suggestions you will discover on these kinds of web pages you’ll be able to live a healthier life and shed weight without starving or perhaps needing to give up all you prefer to eat.