Download Amazon Web Services in Action by Andreas Wittig, Michael Wittig PDF

By Andreas Wittig, Michael Wittig

Amazon internet companies in motion introduces you to computing, storing, and networking within the AWS cloud. The booklet will train you in regards to the most vital providers on AWS. additionally, you will know about top practices relating to safeguard, excessive availability and scalability.You'll begin with a vast review of cloud computing and AWS and how one can spin-up servers manually and from the command line. You'll how one can automate your infrastructure by way of programmatically calling the AWS API to regulate every little thing of AWS. you'll be brought to the idea that of Infrastructure as Code with the aid of AWS CloudFormation.You will know about diverse techniques to set up purposes on AWS. You'll additionally the right way to safe your infrastructure through separating networks, controlling site visitors and handling entry to AWS assets. subsequent, you'll study suggestions and strategies for storing your facts. you are going to adventure tips on how to combine AWS companies into your individual functions via SDKs. eventually, this e-book teaches you the way to layout for top availability, fault tolerance, and scalability.

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The corresponding macros for double and long double begin with the prefixes DBL_ and LDBL_. h in Chapter 15. The program in Example 2-2 starts by printing the typical values for the type float, then illustrates the rounding error that results from storing a floating-point number in a float variable. Example 2-2. 6; // A variable of type double. float f_var = (float)d_var; // Initializes the float // variable with the value of d_var. 10f\n", d_var); Floating-Point Types This is the Title of the Book, eMatter Edition Copyright © 2012 O’Reilly & Associates, Inc.

Here x refers to the long variable // Declare a new float variable x with block scope // Here x refers to the long variable again } In this example, the long variable x delcared in the main( ) function hides the global variable x with type double. Thus there is no direct way to access the double variable x from within main( ). Furthermore, in the conditional block that depends on the if statement, x refers to the newly declared float variable, which in turn hides the long variable x. How the C Compiler Works Once you have written a source file using a text editor, you can invoke a C compiler to translate it into machine code.

C99 implementations are not required to provide the types marked as “optional” in the table. Table 2-5. Integer types with defined width Type Meaning An integer type whose width is exactly N bits Implementation Optional int_leastN_t uint_leastN_t An integer type whose width is at least N bits Required for N = 8, 16, 32, 64 int_fastN_t uint_fastN_t The fastest type to process whose width is at least N bits Required for N = 8, 16, 32, 64 intmax_t uintmax_t The widest integer type implemented Required intptr_t uintptr_t An integer type wide enough to store the value of a pointer Optional intN_t uintN_t For example, int_least64_t and uint_least64_t are integer types with a width of at least 64 bits.

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