Think about instance reservations
Spot instances can be provisioned at 10-20% price of on-demand pricing. Spot instances can be used to do batch tasks convert media or do stateless jobs in general
If machines are running at good utilisation for a long time consider reserving instance. They can give you around 25-40% savings depending on payment options and tenure.
Note – Instances can be reserved by region only , so make sure you decide the right region for you.
Use only what you need
Stopping servers which need not be up the whole time can lead to large savings. Dev servers at off-time or autoscaling for tasks which have a very varying usage pattern.
Simple python scripts and good tagging on instances can make this task of stopping and bringing them up very easy.
Take Care of Resource Leakages
These are typically small savings but it can help to maintain these so they dont add up.
- Unused Elastic Ips
- Unused EBS Volumes
- Redundant Snapshots
I made a simple script to find these out here.
If you would rather just have the relevant script
Checks on AWS Console
Trusted advisor gives recommendation about your resources on aws. These includes cost saving tips, increasing performance and security. You can also register alarms on budgets console.
Dependency injection and IOC are patterns that have been talked about a lot.
If you are using something like spring(java) or Laravel(PHP) you might be using DI and IOC without even knowing it.
But what exactly are they and why should you care?
Mysql 8.0 was released a couple of months back, if you havent heard the news here is what it brings to the world.
MySQL 8.0 status. MySQL 8.0 is a development series not recommended for production use.For latest update see
Global Data Dictionary
Instead of maintaining the
TRG.. files, MySql will use the global data dictionary to store table metadata. These will be cached in memory as data objects. There is a pragmatic difference between system table and data dictionary as the mysql blogs says
Data dictionary contains meta data needed to execute SQL queries while system tables contain auxiliary meta-data like timezone and help information.
Instead of remembering which user had the INSERT UPDATE privilege now MySql gives the ability to create roles. Roles are basically a group of privileges.
So you might want to create an analytics role and assign it to all users who only want read access. Certainly, should help DevOps, DBA guys.
MySql now allows for making an index invisible, what invisibility signifies is that the MySql query optimizer wont consider that index in the query plan optimization. The primary use case here is to monitor query performance after making index invisible and then proceed as needed, as toggling index costs almost nothing.
Better UUID support
For long it has been considered a bad idea to make UUID as primary key And for good reasons. Mysql now adds
BIN_TO_UUID functions, these solve two problems
- Increase space efficiency vs
- The problem of innodb storing data by primary key order(by swapping the high time variant part to start
For more detailed changes refer MySql Blog or What new in MySql 8.0
This is the first blog in the HHYN(Have you heard the news) series.
Feedback is always precious so please like, reblog or comment below.
Laravel 5.3 was released few months back, and came with a bundle of improvements.
So Whats New?
Rust is a compiled, statically-typed, non-garbaged collected systems programming language. An initiative by Mozilla, it has attracted a lot of traction lately because of its blazing fast speed and the high level abstraction(as the rust-lang page says “Zero cost abstractions”).
Read Time ~10 mins.
Tensor flow is an open source library for doing numerical computation developed by the Google Brain project. Though used mostly for machine learning and deep learning application, the library is flexible enough to conduct general computation.
Dont just dismiss this as Yet another language that transpiles to JS. Elm has a lot of nifty features, that makes it a choice worth considering.
HTTP/2 is the largest change in Hyper text transfer protocol after almost 16 years. Being a major version upgrade from HTTP/1.1, there has been a lot of discussion around it.
HTTP/2 is a binary protocol highly inspired from Google’s SPDY, It brings improvements over older version of HTTP in terms of security(by proposing an explicit TLS profile) , speed and simplicity. HTTP/2 can be used both on TLS and TCP More details, but most browsers only support it over TLS.
Major additions in HTTP/2
Animations are a crucial part of any unity project. In this post we explore the various method of animating game objects in unity.
Most common ways to achieve animation in unity –
- Animation View – This allows you to view/edit animation inside unity and apply them on game objects.
- Animator(Mecanims) – Animator allows user to define animation as a state machine. Transition between animation can be either scheduled or done programmatically.
- External Modeling tools – Make animations in external tools and import them as asset in unity.(I am not going to talk about this much)
Flux is awesome, React combined more so.
I have been working with flux and react for a while now. Some of the problems that i faced were around server interaction. Facebook hasn’t talked much about it, the documentation gives no guidelines, except a mention of interaction must be done through action creators.
So i trolled around internet for exloring what other developers have adopted, to find some best practices and solutions to problems i encountered while building react+flux apps.