Memcached with CMS websites than the system resources provided on shared Linux plans will permit. Content Delivery Networks or CDNs cache copies of a website's files in data centers by geo-location and use DNS routing to select the version closest to the web browser or user request origin. CDN services can reduce VPS website response times considerably and reduce web traffic strain on the hardware. The main advantage of VPS hosting plans is that they provide the isolation and system resources required for advanced web server stack customizations that enable better website caching for high performance web & mobile applications at scale.
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Buying a VPS plan means that you get your very own virtual server environment. You have full control over the operating system, the extensions and apps you install, and all their settings. Each physical server will still host multiple VPS customers, but not as many as with shared hosting, and typically each VPS will be allocated a share of key resources – RAM, storage space, CPU cores – for their use alone.
A VPS doesn’t just have more RAM, disk space, and a proprietary share of CPU than a shared account. Depending on the provider, some VPS plans offer burstable memory, which is a pool of RAM set aside for extraordinary events. This is the stuff that can help counter the so-called “Digg-effect,” that much-whispered about occurrence that’s the simultaneous hope and fear of everyone who runs a web site. When you have an unexpected high traffic event, burstable memory will call on a pool of reserved, shared memory to satisfy the needs of temporary high traffic. This is not available on shared servers and, while the necessary memory is available on a dedicated server, your site might not get the kind of traffic on a daily basis to justify the expense of a dedicated server. Again, not all VPS plans have burstable memory, so ask your provider if their VPS plans do.
VPS hosting is like you are living in an apartment complex. It means that other people are living in the same building, but you have your own secure apartment. You will get more room and restrictions will be fewer as compared to living in a dorm. It also means that if your neighbour is misbehaving, it is the problem of owner of building, not yours.
Most SSD storage drives operate in RAID arrays in data centers including multiple copies of website files for backup purposes in case of hardware failure. SSD storage can also be used as Virtual RAM (VRAM) with much higher performance standards than HDD for caching PHP & MySQL database functions in active memory. Effective use of SSD & VRAM in web servers can save significantly money in corporate IT and has been developed by Twitter in their data centers. Generally, it would not be recommended to sign up for VPS plans implementing HDD storage over SSD options in 2017 for hosting.