Deployment strategies in real projects

 

Deployment strategies in real projects

Three deployment approaches are worth knowing:

Rolling deployment

Gradually replace old application instances with new ones. Useful for many routine releases.

Blue-green deployment

Run old and new versions in separate environments, test the new version, then switch traffic. This needs additional capacity and careful handling of state.

Canary deployment

Release the new version to a small portion of traffic first, check its performance, and gradually expand the release if everything looks good.

For example, a bank might first release a new payment-service version to a small group of users or a limited portion of traffic before making it available to everyone.

Note that Kubernetes Deployments support rolling updates directly. 

Blue-green and canary releases typically need additional traffic-routing configuration or deployment tooling.

Comments

Post a Comment

Popular posts from this blog

Async/await

  Async/await An async function is a function declared with the async keyword, and the await keyword is permitted within them. The async and await keywords enable asynchronous, promise-based behavior to be written in a cleaner style, avoiding the need to explicitly configure promise chains. "async and await make promises easier to write" async  makes a function return a Promise await  makes a function wait for a Promise  Async functions Let’s start with the async keyword. It can be placed before a function, like this: async function f() {   return 1; } The word “async” before a function means one simple thing: a function always returns a promise. Other values are wrapped in a resolved promise automatically. For instance, this function returns a resolved promise with the result of 1; let’s test it: async function f() {   return 1; } f().then(alert); // 1 …We could explicitly return a promise, which would be the same: async function f() {   return Promis...
Read more

Valid Parentheses

Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. An input string is valid if: Open brackets must be closed by the same type of brackets. Open brackets must be closed in the correct order. Every close bracket has a corresponding open bracket of the same type.   Example 1: Input: s = "()" Output: true Example 2: Input: s = "()[]{}" Output: true Example 3: Input: s = "(]" Output: false Example 4: Input: s = "([])" Output: true   Stack-Based Logic: Traverse each character in the string. If it's an opening bracket ( '(' , '{' , '[' ), push it onto the stack. If it's a closing bracket ( ')' , '}' , ']' ): If the stack is empty , return false (nothing to match). If the top of the stack is the corresponding opening bracket , pop it. Otherwise, return false . ...
Read more

First negative in every window of size k

 Given an array arr[]  and a positive integer k, find the first negative integer for each and every window(contiguous subarray) of size k. Note: If a window does not contain a negative integer, then return 0 for that window. Examples: Input: arr[] = [-8, 2, 3, -6, 10] , k = 2 Output: [-8, 0, -6, -6] Explanation: Window [-8, 2] First negative integer is -8. Window [2, 3] No negative integers, output is 0. Window [3, -6] First negative integer is -6. Window [-6, 10] First negative integer is -6. Input: arr[] = [12, -1, -7, 8, -15, 30, 16, 28] , k = 3 Output: [-1, -1, -7, -15, -15, 0]  Explanation: Window [12, -1, -7] First negative integer is -1. Window [-1, -7, 8] First negative integer is -1. Window [-7, 8, -15] First negative integer is -7. Window [8, -15, 30] First negative integer is -15. Window [-15, 30, 16] First negative integer is -15. Window [30, 16, 28] No negative integers, output is 0. Input: arr[] = [12, 1, 3, 5] , k = 3 Output: [0, 0]  Explanation: Windo...
Read more