This Week I Learned - Week #285
This Week I Learned -
* An Azure Virtual Network (VNet) is a representation of your own network in the cloud. It is a logical isolation of the Azure cloud dedicated to your subscription. Each VNet you create has its own CIDR block, and can be linked to other VNets and on-premises networks as long as the CIDR blocks do not overlap. The smallest supported subnet in a Azure Virtual Network is /29 (provides eight IP addresses for the subnet), and the largest is /8 (using CIDR subnet definitions). You can add, remove, and modify the CIDR blocks used by a VNet
* The minimum CIDR you can have in a AWS VPC is /28 (16 IP addresses). The maximum CIDR you can have in the VPC is /16 (65,536 IP addresses). You can't change the CIDR block of a VPC once it has been created
* Redis and Memcached are popular, open-source, in-memory data stores. Memcached is designed for simplicity while Redis offers a rich set of features that make it effective for a wide range of use cases. Both Redis and Memcached support sub-millisecond response times. By storing data in-memory they can read data more quickly than disk based databases.
* Amazon ElastiCache supports the Memcached and Redis cache engines.
* Azure Redis Cache gives you access to a secure, dedicated Redis cache, managed by Microsoft, hosted within Azure, and accessible to any application within or outside of Azure. Azure Redis Cache can also be used as an in-memory data structure store, distributed non-relational database, and message broker. Storing too much in a cookie can have a negative impact on performance as the cookie size grows and is passed and validated with every request. A typical solution is to use the cookie as a key to query the data in a backend database. Using an in-memory cache, like Azure Redis Cache, to associate information with a user is much faster than interacting with a full relational database.
* There are many considerations to determine how many virtual networks and subnets you require
* Standard_E64is_v3, Standard_M128ms, Standard_GS5, Standard_DS15_v2, Standard_L32s Azure VM size instances are isolated to hardware dedicated to a single customer, to provide a high degree of isolation from other customers similar to AWS Dedicated instance
* After names like TFS, VSO, VSTS, Microsoft's online ALM tool gets its fourth name change - it's now called Azure DevOps
* AWS Managed Services is not to be confused with the AWS Managed Services Program, which thoroughly vets an APN Partner’s own managed services offerings and next-generation cloud managed services capabilities. AWS MSP Partners undergo a rigorous validation audit of over 80 checks that includes capabilities around application migration, DevOps, CI/CD, security, as well as cloud and application management.
* Google Areo is a new app for ordering food or home services in India
* 144,000 tonnes of dirty nappies are produced in The Netherlands each year. A Dutch firm plans to turn diapers into furniture.
* The Venus flytrap, Dionaea muscipula, is one of a very small group of plants able to move fast. When an insect or spider crawls along the leaves and touches a hair, the trap closes only if a different hair is contacted within twenty seconds of the first touch. The two-touch trigger avoids wasting energy on objects with no food value.
* ‘Chekka Chivantha Vaanam’ marks AR Rahman’s fourteenth soundtrack for Mani Ratnam. In their second collaboration in ‘Thiruda Thiruda’, the song...Thee Thee, is composed with bits of the six-note Bahudhari, a somewhat rare raaga in film songs.
* State Bank of India (SBI) is the largest bank with a market share of 23%
* As of June 2018, there are 39.4 million active credit cards and 944 million debit cards in the country. The Reserve Bank of India (RBI) has mandated banks to replace all existing magnetic stripe-only cards with EMV chip cards by 31 December 2018. EMV stands for Europay, Mastercard, Visa. Chip and PIN cards provide enhanced level of security compared to magnetic stripe cards. These cards help prevent card skimming or cloning and are effective in mitigating fraudulent ‘card present’ or PoS transactions. They offer secured usage by way of mandating second factor authentication through a PIN for every transaction at a point of sale (PoS) - Mint
* A tortilla is either corn or wheat. But a corn tortilla folded and filled is a taco, whereas a filled wheat tortilla is a burrito. Deep fry a burrito, it's a chimichanga. Toast a tortilla, it's a tostada. Roll it, it's an enchilada
* An Azure Virtual Network (VNet) is a representation of your own network in the cloud. It is a logical isolation of the Azure cloud dedicated to your subscription. Each VNet you create has its own CIDR block, and can be linked to other VNets and on-premises networks as long as the CIDR blocks do not overlap. The smallest supported subnet in a Azure Virtual Network is /29 (provides eight IP addresses for the subnet), and the largest is /8 (using CIDR subnet definitions). You can add, remove, and modify the CIDR blocks used by a VNet
* The minimum CIDR you can have in a AWS VPC is /28 (16 IP addresses). The maximum CIDR you can have in the VPC is /16 (65,536 IP addresses). You can't change the CIDR block of a VPC once it has been created
* Redis and Memcached are popular, open-source, in-memory data stores. Memcached is designed for simplicity while Redis offers a rich set of features that make it effective for a wide range of use cases. Both Redis and Memcached support sub-millisecond response times. By storing data in-memory they can read data more quickly than disk based databases.
* Amazon ElastiCache supports the Memcached and Redis cache engines.
* Azure Redis Cache gives you access to a secure, dedicated Redis cache, managed by Microsoft, hosted within Azure, and accessible to any application within or outside of Azure. Azure Redis Cache can also be used as an in-memory data structure store, distributed non-relational database, and message broker. Storing too much in a cookie can have a negative impact on performance as the cookie size grows and is passed and validated with every request. A typical solution is to use the cookie as a key to query the data in a backend database. Using an in-memory cache, like Azure Redis Cache, to associate information with a user is much faster than interacting with a full relational database.
* There are many considerations to determine how many virtual networks and subnets you require
* After names like TFS, VSO, VSTS, Microsoft's online ALM tool gets its fourth name change - it's now called Azure DevOps
* AWS Managed Services is not to be confused with the AWS Managed Services Program, which thoroughly vets an APN Partner’s own managed services offerings and next-generation cloud managed services capabilities. AWS MSP Partners undergo a rigorous validation audit of over 80 checks that includes capabilities around application migration, DevOps, CI/CD, security, as well as cloud and application management.
* Google Areo is a new app for ordering food or home services in India
* 144,000 tonnes of dirty nappies are produced in The Netherlands each year. A Dutch firm plans to turn diapers into furniture.
* The Venus flytrap, Dionaea muscipula, is one of a very small group of plants able to move fast. When an insect or spider crawls along the leaves and touches a hair, the trap closes only if a different hair is contacted within twenty seconds of the first touch. The two-touch trigger avoids wasting energy on objects with no food value.
* ‘Chekka Chivantha Vaanam’ marks AR Rahman’s fourteenth soundtrack for Mani Ratnam. In their second collaboration in ‘Thiruda Thiruda’, the song...Thee Thee, is composed with bits of the six-note Bahudhari, a somewhat rare raaga in film songs.
* State Bank of India (SBI) is the largest bank with a market share of 23%
* As of June 2018, there are 39.4 million active credit cards and 944 million debit cards in the country. The Reserve Bank of India (RBI) has mandated banks to replace all existing magnetic stripe-only cards with EMV chip cards by 31 December 2018. EMV stands for Europay, Mastercard, Visa. Chip and PIN cards provide enhanced level of security compared to magnetic stripe cards. These cards help prevent card skimming or cloning and are effective in mitigating fraudulent ‘card present’ or PoS transactions. They offer secured usage by way of mandating second factor authentication through a PIN for every transaction at a point of sale (PoS) - Mint
* A tortilla is either corn or wheat. But a corn tortilla folded and filled is a taco, whereas a filled wheat tortilla is a burrito. Deep fry a burrito, it's a chimichanga. Toast a tortilla, it's a tostada. Roll it, it's an enchilada
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