M101JS HOMEWORK 6

In that scenario secondary nodes will function as fail over. This will be the sixth of seven. By default reads can only be done against the primary. Which company meeting these criteria raised the smallest average amount of money per funding round? Note you will need to have your path setup correctly to find mongorestore. By setting a read preference it is possible to read from secondary nodes as well.

Other unique indexes are only unique on a shard. The most interesting lecture was the one on MongoDB failover in the Node. Don’t include their quiz scores in the calculation. Two out of five assignments I could answer instantly, but the others made realize I need to watch the lectures so I am sure of the answers I give. This site uses cookies.

Leave a Reply Cancel reply Enter your comment here If you have all the dependencies installed correctly, this will print the message ‘Express server started on port ‘. In the previous weeks the focus was less on connecting to the database and directed more at making the code work for the homework assignment.

Perhaps to balance the load in situations where new data can eventually be consistent or stale data is permitted.

MJS Week 6 – Glimpses of Daniel’s world

To be clear, each student’s average should include only exams and homework grades. To figure out what queries you need to optimize, you can read the code in posts.

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m101js homework 6

Homwwork The final lectures of the course are about the way you scale horizontally in MongoDB. I had no problem with the questions that asked how to ensure a certain persistence or which shard would be queried for a certain read operation. That will return one document. In this problem you will analyze a profile log taken from a mongoDB instance. By fast, we mean that indexes should be in place to satisfy these queries such that we only need homeworkk scan the number of documents we are going to return.

Two out of five assignments I could answer instantly, but the others made realize I need to watch the lectures so I am sure of the answers I give.

Hello from MongoDB!

By default reads can only be done against the primary. The last assignment was setting up the sharded environment, not much trouble with that because I knew it from my M course and the script was pretty much handed to me.

For companies in our collection founded in and having 5 or more rounds of funding, calculate the average amount raised in each round of funding. The shard key must be present in each document.

m101js homework 6

The blog home page The page that displays blog posts by tag http: Notify me of new posts via email. The first section, Lectureswill summarize what I learned from the videos and related examples. Leave a Reply Cancel reply Enter your comment here It should redirect you to the welcome page and say: Who is the easiest grader on campus?

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Tag sets allow for advanced configuration of write concerns and read preferences by considering tags on nodes, more details are found in the documentation. Do not include the surrounding quotes in providing your answer. Some students have three homework assignments, etc. When it comes to sharding, it will probably be about the shard key and the implications of using a particular key.

The final lectures of the course are about the way you scale horizontally in MongoDB. The lectures left me with some questions and situations I like to explore in perhaps a future blog: Who is the easiest grader on campus? When it says “Correct amount of data documents. This assignment requires Mongo 2. The shard key must be present in each document.

You can read part five here.

Tag sets A topic not covered during this course is tag sets. You have really selected the suitable topic node.

m101js homework 6