PolyLingo - 7/22~24
·
Projects/PolyLingo_2025
What I did- Make a server to get the requests from Mobile app. This is required to protect private environment variables which are api keys and secrets. Use vercel to deploy the nextjs-server. also applied rate limits and other validations.- Fixed translation malfuction that it cannot make proper api calls because of the empty environment variables in expo project dashboard.- Test subscription f..
Memory
·
Computer Science/Operating System
Memory refers to a device in electronic circuits that records data, state, or instructions.It is categorized into different types based on speed, volatility, and capacity: 1. RegisterLocated inside the CPU — smallest and fastest memory.VolatileFastest speedSmallest storage capacity2. *CacheRefers to L1, L2 cache.VolatileVery fast speedSmall storage capacity3. Main MemoryTypically refers to RAM...
PDU
·
Computer Science/Network
When data is transmitted between layers in a network stack,the unit of data at each layer is referred to as a PDU (Protocol Data Unit). A PDU typically consists of:A header: control information specific to the layerA payload: the actual data being transmittedEach layer has its own name for the PDU:Application Layer: MessageTransport Layer: Segment (TCP) / Datagram (UDP)Internet Layer: PacketLink..
Components of a computer
·
Computer Science/Operating System
Computer ArchitectureA computer consists of the following components:CPU (Central Processing Unit)DMA Controller (Direct Memory Access)Memory (Normally RAM, Random Access Memory)TimerDevice Controller CPUThe CPU (Central Processing Unit) is a computer component structured as follows:It is a worker that simply interprets and executes instructions stored in memory, triggered by *interrupts. When..
PolyLingo - 7/20,21
·
Projects/PolyLingo_2025
What I did- Connect supabase to administrate subscription and usage of user.- Make logics to synchronize the usage of users when - entering app - choosing an subscription plan - searching - restore the subscription plan- Fix usage-initialization to 0 problem when reinstalling the app in case no login with apple ID- Solve subscription plans missing metadata ThoughtsWhile testing and completi..
Elements that make up the database
·
Computer Science/Database
EntityAn entity is a noun that has multiple attributes, such as a person, place, object, event, or concept.Relation_릴레이션A relation is the basic unit for storing data in a database,where data about an entity is managed within a single relation.In relational databases, a relation corresponds to a table — tables are made up of records (rows), and tables together form a database.In NoSQL databases, ..