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Daily Edition · Page 1

THE DAILY INDEX

Technology, AI, software, security, crypto and business

Across today’s newsletters

Today’s Index

TLDR

OPENAI TO CHALLENGE GOOGLE WITH ITS OWN SEARCH ENGINE IN MAY

Reports indicate that OpenAI is looking to launch a search engine soon. OpenAI's in-house event on May 9 may focus on its release, although the event times and date may be subject to change. Google has scheduled its annual developer conference for May 14 - OpenAI's event may be a strategy to upstage Google before the search giant makes its AI announcements. This article presents the evidence for OpenAI's search plans.

beebom.com · 3 min

TLDR Web Dev

WHAT EVERY DEVELOPER SHOULD KNOW ABOUT CACHE COHERENCE

Cache coherence makes sure that data stays consistent across multiple caches in distributed systems. There are two types of cache coherence protocols: snooping and directory-based protocols. In snooping protocols, caches "listen" on a bus, updating or invalidating copies based on other caches' actions. In directory-based protocols, a central directory tracks data location and state, coordinating updates and invalidations.

swequiz.com · 5 min

TLDR

SPACEX ADDS COSMIC TOURISM OFFERING TO WEBSITE

A new 'Human Spaceflight' tab on SpaceX's website offers flights to Earth's orbit, the International Space Station (ISS), the Moon, and Mars, with missions beginning as early as this year. There is no pricing information for the offerings and interested customers will have to inquire through email. The Earth orbit mission, which will last three to six days, offers a view of the planet from 300 kilometers high for two to four passengers. Ten-day commercial missions to the ISS will be available as early as 2025. The missions to lunar orbit and Mars do not have listed timelines.

flyingmag.com · 4 min

TLDR

FOUND: THE DIAL IN THE BRAIN THAT CONTROLS THE IMMUNE SYSTEM

Scientists have identified the brain cells that regulate inflammation and determined how they keep tabs on the immune response. The neurons that act as the master dial for the immune system live in the brain stem, the stalk-like structure that connects the bulk of the brain to the spinal cord. The finding could lead to treatments for autoimmune diseases and other conditions caused by an excessive immune response. The mechanism by which the brain sends signals back to the immune system to regulate inflammation remains unclear.

nature.com · 6 min

TLDR

NOT ALL GRAPHS ARE TREES

Relational algebra can easily be represented as trees as formulas are already structurally rooted trees where each operator has its inputs as children. Things get more complicated when introducing non-tree structures, like some kind of self-join. This can be resolved using inlining (simply duplicating the expression you want to reference twice) or let binding. Common methods to open up unrestricted access to represent graphs containing cycles in programs include self-referencing, using a fix point operator, and explicitly listing edges.

buttondown.email · 6 min

TLDR IndexPage 1