This week’s system design refresher:
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ByteByteGo expertise collective
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Why PostgreSQL is probably the most beloved database
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What’s a proxy?
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What’s time/clock?
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Twitter structure in 2012
We’re excited to announce the launch of the ByteByteGo expertise collective! The collective’s members may have unique entry to alternatives at high-growth startups and world-class corporations resembling Meta, Stripe, Snowflake, and so on.
The ByteByteGo collective has 100 candidates dwell at this second, and over 300+ purposes from Senior / Employees / Lead engineers from the most effective corporations on the market. Check out among the superb, open-to-work, skills from my group:
Corporations: If accepted, you may get entry to the total pool of energetic candidates (rising quick), in addition to all future candidates. Job posts are included within the bundle, and featured packages get a e-newsletter shoutout. No placement charges, ever.
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Browse candidates.
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When one pursuits you, you’ll be able to attain out to them (no restrict).
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In the event that they settle for your request to talk, you are linked immediately.
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It is that straightforward!
You’ll be able to apply to be a hiring accomplice right here (click on “Meet Candidates”)
Candidates: Totally free. Create a public or nameless profile. For everybody who’s on the lookout for a job, or simply curious to see what’s on the market. Apply utilizing the hyperlink under!
The diagram exhibits the various use instances by PostgreSQL – one database that features nearly all of the use instances builders want.
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OLTP (On-line Transaction Processing)
We are able to use PostgreSQL for CRUD (Create-Learn-Replace-Delete) operations. -
OLAP (On-line Analytical Processing)
We are able to use PostgreSQL for analytical processing. PostgreSQL relies on HTAP (Hybrid transactional/analytical processing) structure, so it could deal with each OLTP and OLAP nicely. -
FDW (International Knowledge Wrapper)
A FDW is an extension accessible in PostgreSQL that permits us to entry a desk or schema in a single database from one other. -
Streaming
PipelineDB is a PostgreSQL extension for high-performance time-series aggregation, designed to energy real-time reporting and analytics purposes. -
Geospatial
PostGIS is a spatial database extender for PostgreSQL object-relational database. It provides help for geographic objects, permitting location queries to be run in SQL. -
Time Collection
Timescale extends PostgreSQL for time sequence and analytics. For instance, builders can mix relentless streams of economic and tick knowledge with different enterprise knowledge to construct new apps and uncover distinctive insights. -
Distributed Tables
CitusData scales Postgres by distributing knowledge & queries.
A ahead proxy is a server that sits between a bunch of shopper machines and the web.
A reverse proxy sits between the web and the online servers. It intercepts the requests from shoppers and talks to the online server on behalf of the shoppers.
Each few years, there’s a particular phenomenon that the second after “23:59:59” just isn’t “00:00:00” however “23:59:60”. It’s known as leap second, which might simply trigger time-processing bugs if not dealt with fastidiously.
Will we all the time must deal with leap seconds? It depends upon which era illustration is used. Generally used time representations embody UTC, GMT, TAI, Unix Timestamp, Epoc time, TrueTime, and GPS time.
Since everyone seems to be speaking about Twitter. Let’s take a fast have a look at what Twitter structure appeared like in 2012. This text relies on the tech speak given by a Twitter engineer. I redrew the diagram as the unique diagram is troublesome to learn.
