Quick Answer: How Do I Optimize Django App?

What is lazy loading in Django?

Django querysets are said to be lazily loaded and cached¹ ².

Lazy loading means that until you perform certain actions on the queryset, such as iterating over it, the corresponding DB query won’t be made.

Caching means that if you re-use the same queryset, multiple DB queries won’t be made..

How does Django cache data?

To use cache in Django, first thing to do is to set up where the cache will stay. The cache framework offers different possibilities – cache can be saved in database, on file system or directly in memory. Setting is done in the settings.py file of your project.

How can I make my database query faster?

10 More Do’s and Don’ts for Faster SQL QueriesDo use temp tables to improve cursor performance. … Don’t nest views. … Do use table-valued functions. … Do use partitioning to avoid large data moves. … If you must use ORMs, use stored procedures. … Don’t do large ops on many tables in the same batch. … Don’t use triggers. … Don’t cluster on GUID.More items…•

Is Django faster than node?

Both tools have great scalability and performance. However, while Django seems to have the edge with scalability, Node. js has the edge with performance.

Is Django still relevant in 2019? … According to Statista, in 2018 Django ranked among the most used and most sought-after frameworks, libraries, and tools globally according to software engineers. Stack Overflow put Django on its list of most loved technologies of 2018. There are many reasons for Django’s popularity.

Is Django good for production?

High-level: When to use Django If you can check even a few of the statements below (without strongly disagreeing with any), chances are that Django is good for your project. You need to develop a web app or API backend. You need to move fast, deploy fast, and also make changes as you move ahead.

How can I make Django app faster?

Recommendations to make your Django app faster | Swapps….Reduce the amount of queriesUse select_related and prefetch_related when working with model relationships (one to one, many to many, foreign keys, etc).Check your filters, sometimes it’s faster to select all items and filter them with python directly.More items…•

How do you optimize a database?

MySQL: Optimize Database Best PracticesProfile Your Server Workload. … Understand the Key Resources. … Curate Baseline Metrics. … Analyze the Execution Plan. … Review the Index and Table. … Avoid Using MySQL as a Queue. … Be Aware of Scalability Traps. … Use Response Time Analysis to Identify MySQL Bottlenecks.More items…•

Why is Django so slow?

Many performance issues are caused by one of the following: A slow layer – just one of many layers (the database, app server, etc) is slow and impacting many views in a Django app. A slow view – one view is generating slow requests. This has a big impact on the performance profile of the app as a whole.

Is Django fast enough?

Most humans don’t mind waiting roughly a second for their web page to load, but machines can be more impatient. If you are using Django to serve an API, where it is primarily computer programs talking to other computer programs, then it may not be fast enough for very high performance workloads.

Is Django ORM slow?

Django’s ORM is fantastic. It’s slow because it chooses to be convenient but if it needs to be fast it’s just a few slight API calls away. If you’re curious, check out the code on Github.

What is Django debug toolbar?

The Django Debug Toolbar is a configurable set of panels that display various debug information about the current request/response and when clicked, display more details about the panel’s content. … The Django Debug Toolbar is released under the BSD license, like Django itself.