November 19, 2023 · 708 words · 4 min
In this article, I’ll deep dive into an annother powerful data structure in Redis: Bloom Filter. Bloom Filter can help you check whether elements exist, reduce unnecessary quering costs, improve system response speed and throughput. By properly utilizing Bloom Filter, you can optimize application performance effectively, meet the requirement of high-performance and large-scale data processing.
November 18, 2023 · 761 words · 4 min
In this article, I’ll deep dive into an interesting and powerful feature of Redis: HyperLog. By understanding the working principles and application scenarios of this feature, you’ll be able to leverage Redis effectively to build high-performance and high-scalable applications.
October 20, 2023 · 510 words · 3 min
Sometimes we want to develop some high-performance c++ application on Linux(like epoll/ioturing), installing a virtual machine is a solution, but I think it’s not the most convenient solution, today I’ll share how to build a linux/c++ development environment based on docker/vscode.
September 25, 2023 · 661 words · 4 min
Role-based access control(RBAC) is a policy-neutral access control mechanism defined around roles and privileges. The components of RBAC such as role-permissions, user-role and role-role relationships make it simple to perform user assignments. In this article, I’ll share some information about RBAC and ABAC. The basic idea of RBAC is to separate permission management from users to reduce management complexity and provider higher flexibility and security. By using roles as a middle layer, administrators can more easily manage user permissions without having to focus on each user’s permission settings.
July 26, 2023 · 837 words · 4 min
Apache Cassandra is an open source NoSQL distributed database trusted by thousands of companies for scalability and high availability without compromising performance. Linear scalability and proven fault-tolerance on commodity hardware or cloud infrastructure make it the perfect platform for mission-critical data. In this article, I’ll share a whole project to demonstrate how to perform CRUD operation in Cassandra with Spring Boot. Note: Pagination in Cassandra is a little tricky, Cassandra don’t support offset-based limit, so we need to use cursor-based limit to implement pagination.
July 10, 2023 · 3831 words · 18 min
No software is 100% secure, it’s just that the problems haven’t been discovered yet.
In this article. I’ll share the top 10 Web Application Security Problems.
This article is reproduced from OWASP.
June 4, 2023 · 910 words · 5 min
A distributed transaction is a database transaction in which two or more network hosts are involved.
As we know, network and hosts may unreachable due to some reasons, like power failure, hardware malfunction, etc.
In this article, I’ll share how to implement distributed transaction with TCC.
May 16, 2023 · 858 words · 5 min
Today I’ll share an article about Dynamic Programing .
Dynamic programming is both a mathematical optimization method and a computer programming method. The method was developed by Richard Bellman in the 1950s and has found applications in numerous fields, from aerospace engineering to economics.
wikipedia - Dynamic programming
May 6, 2023 · 1126 words · 6 min
A
Setthat further provides a total ordering on its elements. The elements are ordered using their natural ordering, or by aComparatortypically provided at sorted set creation time. The set’s iterator will traverse the set in ascending element order. Several additional operations are provided to take advantage of the ordering. (This interface is the set analogue ofSortedMap.)Oracle - SortedSet
Java provides a built-in SortedSet implementation, known as TreeSet. In this article, I’ll show how to implement a SortedSet by Ordered Array.
May 5, 2023 · 548 words · 3 min
Network is unstable, it can fail at any moment. In this article, I’ll share how to retry requests correctly with Feign.
Feign is a Java to HTTP client binder inspired by Retrofit, JAXRS-2.0, and WebSocket. Feign’s first goal was reducing the complexity of binding Denominator uniformly to HTTP APIs regardless of ReSTfulness.
Feign - Introduction