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 SOFTWARE DESIGN


  What are the Four Most Important Technologies Inside an Office, Today?

The office life has changed a lot since the beginning of the 21st century. Nowadays, technologies have taken over a large part of the work that people have to do, inside their walls. Some of them are more important than others, though. Here are four that no company should live without. A VoIP Phone SystemIf a company wants to communicate with its clients, it needs to install a centralized phone system. The old ones were complicated and costly. The more phone lines you had, the higher the monthly bill got. Today, VoIP phone systems have replaced the traditional ones, bringing in an era of ...

1,880 0       SMARTPHONE VOIP 5G


  What’s Custom Software Development in 2021?

Each year, custom software development shows us its new angles — those shaped by the technology trends and changes in customer behavior and preferences. Considering the highly impactful nature of 2020 with the outbreak of COVID-19, 2021 custom software development was formed around the technologies that have contributed to the minimization of the pandemic’s harmful impact. So what are these technologies?In this article, you will find out info about the top trends in software development that are on the rise right now — all provided with explanations of their value given by Em...

844 0       CLOUD SOFTWARE DEVELOPMENT


  Does My Online Business Need Log Aggregation?

Logs crop up all over the place. They are generated by everything from web servers and databases to the firewalls which protect them from breaches.Because logs accumulate in large volumes from all of these different sources, log aggregation is an important process which works to organize and impose order over otherwise disparate log files.That sounds good, but should your online business be eager to jump on the log aggregation bandwagon? Here is a look at the main benefits and considerations to help you decide.Image Source: PixabayThe importance of log aggregationAs mentioned, a laundry list o...

2,634 0       SOFTWARE DESIGN LOG AGGREGATION


  Service discovery with etcd

In previous post, we have talked about etcd and its usage. This post we will cover how to implement server discovery with etcd.Service discovery is to solve one of the most commonly seen scenarios in distributed system where how to find the corresponding target service to talk to. In short, it is to find some server which one can talk to based on some service name.A complete service discovery system include below three key functions:Service registration: A service must register itself to some common place so that others can discover itHealth check: An instance must report its health status to ...

4,307 0       SERVICE DISCOVERY ETCD DEMO TUTORIAL


  etcd installation and usage

etcd is an open source and highly available distributed key-value storage system and is commonly used in critical data storage and service discovery and registration use cases. It is focusing on:Simple: well-defined, user-facing API (gRPC)Secure: automatic TLS with optional client cert authenticationFast: benchmarked 10,000 writes/secReliable: properly distributed using Raftetcd and Redis both support key-value storage and can be set up in distributed systems. Also Redis supporst more key value types. But they are used in different use cases and have different focus areas given below differenc...

2,972 0       DISTRIBUTED SYSTEM RAFT TUTORIAL ETCD


  4 Things Every Great Online Teacher Knows

Virtual classrooms have become the new norm for education during the pandemic. Teachers from every school have to adjust to this new reality to ensure students keep learning even in the absence of a physical classroom setup. Thankfully, there are various digital solutions to help teachers conduct online classes without much hassle. One such tool that has revolutionized the online learning market is a Learning Management System (LMS).For schools, the in-house learning management department always looks for learning solutions that can be accessed both online and offline, so that students ca...

947 0       EDUCATION ELEARNING ILEARNING


  Some thoughts about microservice adoption

Nowadays microservice is very popular among companies with the increasing complexity of systems. The goal is to make each microservice to handle one specific job and handle it well. This normally would provide the benefit of maintaining the service easily and isolating errors and making the service more reliable and scalable.The benefits of adopting microservice are obvious.Maintainability. Decouple functions so that each function can be maintained separately which reduces the risk of issue caused by bug in other code which is not related to this function at all. It can be easily maintained by...

1,964 0       MICRO SERVICE DISADVANTAGE ADVANTAGE


  What is cache penetration, cache breakdown and cache avalanche?

When designing and developing highly available system, cache is an very important consideration. It is useful to cache some frequently accessed data so that they can be accessed quickly and also cache can protect the downstream system like DB from being hit too often. To provide better cache design in large systems, some problems may need to be considered first. In this post, we will talk about some frequently discussed cache problems and mitigation plans.Cache penetrationCache penetration is a scenario where the data to be searched doesn't exist at DB and the returned empty result set is...

15,693 0       CACHE BREAKDOWN CACHE PENETRATION SYSTEM DESIGN CACHE AVALANCHE