1. Bluesky migrates to single-tenant SQLite
Total comment counts : 24
Summary
The article discusses the refactoring of the PDS (Personal DataStore) to use a single-tenant SQLite datastore. Each user now has their own SQLite file to store their repository and private account state. The user databases are stored hierarchically, and repo signing keys are stored alongside the SQLite file. The article also mentions the use of an ActorStore for interacting with user data, which requires clear transactional writes. An LRUCache is used for managing signing keys and databases, with a limit of 30k file handles and keys in memory. Additionally, three separate SQLite databases are introduced for managing service state, with concurrent reads and streaming replication enabled. The article mentions the intention to use Litestream or a similar tool for the PDS distribution.
Top 1 Comment Summary
The article discusses the challenges and drawbacks of using a schema or database per tenant setup in a shared instance. It mentions the issue of row-level security and the potential for different schema versions during data migration. The article suggests that while this setup has its merits, many companies are moving away from it due to the associated problems. The author also mentions their own experience, having progressed from a SQLite per tenant setup to a schema per tenant on Postgres, and now finally to a single schema with row-level security.
Top 2 Comment Summary
The article is discussing a statement regarding concurrent transactions in SQLite. The author argues that SQLite does support concurrent transactions as long as the .db file is not accessed through a file share (UNC, or NFS, etc.). They have been using this feature to update/read the database from multiple threads/processes on the same machine. They also mention that snapshotting with the SQLite backup API can be used for consistent viewing without holding on to a transaction or copying in-memory. However, the author admits that they may be missing something since they haven’t used SQLite in years.
2. WeWork Goes Bankrupt
Total comment counts : 60
Summary
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Top 1 Comment Summary
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Top 2 Comment Summary
The article suggests that WeWork should consider operating on a franchise model. Many property management companies have vacant space that could be used by WeWork for a short period, which would help offset the lost revenue from leases. Implementing this franchise model would solve WeWork’s lease issues and allow them to be useful even in smaller markets. The value of WeWork lies in its seamless experience of providing consistent quality workspaces in different cities.
3. The coolest robot I’ve ever built [video]
Total comment counts : 20
Summary
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Top 1 Comment Summary
The article describes the author’s personal experience with a robot created by their old friend. The author mentions that the creator is a nice person. They also mention that they enjoyed watching a video featuring the robot and an old Soviet games console, and provide a link to the video. The link leads to a YouTube video with the code “9mqXT-zj47s.”
Top 2 Comment Summary
The article discusses a cool project and highlights the advancements in robot technology, citing Disney’s recent robots. The author believes that it won’t be long before we have realistic robots in people’s homes, which could lead to viral videos and significant profits for companies selling them.
4. Still no love for WPA3 on the Raspberry Pi 5
Total comment counts : 18
Summary
The article discusses the lack of support for WPA3 (wireless security) on the Raspberry Pi 4 and the newly released Pi 5. The author mentions that despite the Pi 5 having the same wifi chip as the Pi 4, there has been no improvement in WPA3 support. The article also highlights a similar issue with early 2015 Macbook Pros running Linux, where WPA3 networks cannot be joined. The author suggests using a USB wifi adapter with better kernel support or resorting to wired Ethernet for stability. The article expresses surprise at this situation persisting, considering the Raspberry Pi’s intended use for entry-level learners. The post concludes by mentioning an update that will be made on November 7, 2023.
Top 1 Comment Summary
The article suggests that if you want reliable WiFi on a Raspberry Pi, it is recommended to use an external WiFi adapter instead of relying on the built-in WiFi chips. The author successfully tested various adapters, including WiFi 6E, mini PCIe, and M.2 cards with the Compute Module 4 and Raspberry Pi 5. The article also mentions the Seaberry board specifically designed for multi-WiFi testing. Links are provided for more information on the tested adapters and the Seaberry board.
Top 2 Comment Summary
The article discusses a patch for the driver in Asahi Linux, which is expected to fix a problem with setting passwords on newer firmware. The patch was created by Hector, who updated the driver to use a new method. Additionally, there is another patch that enables the use of an external supplicant for WPA3 when it is unsupported by the chip, although this is uncommon. The driver has not been regularly updated and should have included these features years ago. The patch by Hector is expected to be available soon in the kernel archives.
5. PostgreSQL Encryption: The Available Options
Total comment counts : 17
Summary
The article discusses data encryption in PostgreSQL and explores the available options for encrypting data. By default, PostgreSQL does not have data encryption, so it is important to implement encryption to protect sensitive data. The article explains different types of encryption, including encryption-at-rest and field encryption, and discusses their limitations. It also mentions the “pg_crypto” module in PostgreSQL, which provides encryption functions but is not recommended due to security vulnerabilities. The article introduces Enquo, a project that offers application-layer encryption that allows for efficient querying of encrypted data within the database. The author’s goal is to eventually encrypt all data.
Top 1 Comment Summary
The article discusses the concept of Order Preserving Encryption (OPE), which allows for encrypting data like dates of birth in a way that it can still be queried for certain conditions without revealing the underlying data. However, the article argues that this is a dangerous oversimplification, as attackers can still infer age ranges and distributions. The author emphasizes the importance of considering the nuances and tradeoffs involved in OPE. The article also mentions a paper that provides further information on this topic.
Top 2 Comment Summary
The article discusses a project that implements encryption and decryption of private data at the client side using envelope encryption. It uses a random AES key to encrypt the data and the key is then encrypted with a public key using KMS (Key Management Service) for added security. The project also uses blind indexes for lookups and mentions the need to order encrypted data, which can be achieved using order-respecting encryption algorithms like the Lewi-Yu scheme. The author is interested in learning more about the project and suggests integration with a service like KMS for storing and retrieving encryption keys to ensure auditability of data decryption.
6. IBM Rebus
Total comment counts : 13
Summary
The article discusses the history and usage guidelines of the IBM rebus, a visual representation of the letters in the word “IBM.” The rebus was designed by Paul Rand in 1981 and has since become an iconic part of visual history. It is now in the permanent collection at the Museum of Modern Art in New York.
The rebus has been adjusted to meet the requirements of different mediums, scales, and production environments. It comes in positive and reversed versions, and can be used in special applications like merchandise and events. However, it should not be used as an official brand communications sign off, and prior approval is required for its use.
The article also mentions the totem rebus, which adds more meaning to the original design and speaks to the relationship between mankind and machines. The classic rebus, using the original color scheme, is still used for heritage merchandise and special occasions, but only on a black background. The IBM core colors should be used when applying color specifically to the rebus.
Proper usage guidelines are provided to protect the integrity of Paul Rand’s design work. The rebus should be kept separate from other visual elements by following a minimum uninterrupted space surrounding it. The article also provides examples of what to avoid, such as altering spacing, scaling or recomposing elements, and using unacceptable color combinations.
Additionally, the article mentions approved patterns based on the rebus that can be used in various graphic applications. The article concludes with contact information for further inquiries.
Overall, the article provides information on the history, usage, and guidelines for the IBM rebus and its variations.
Top 1 Comment Summary
The article reflects on the author’s employment at IBM and the pride they felt working for such a well-established company. They mention an eye-bee-m (IBM) t-shirt that they bought from the company store, which reminded them of the company’s history. The author compares this to their current employment at a soul-less corporation in a generic glass building. Overall, the author expresses admiration for IBM’s computing history and the nostalgic elements associated with it.
Top 2 Comment Summary
The article discusses the author’s experience of spending time with a logo designer and learning about the process of creating logos. The designer had a fondness for 60’s style design and highlighted the challenge of creating a logo that is versatile enough to be used on small items like pens as well as larger objects like planes. The author also reflects on the perceived whimsical nature of IBM’s logo and mentions that designing logos can be tricky. Finally, the article mentions the value of design guideline books in providing a clear vision for the logo and what to avoid.
7. Strong evidence for new light isotope of nitrogen
Total comment counts : 8
Summary
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Top 1 Comment Summary
The experiments mentioned in the article were conducted in 2016 at the National Superconducting Cyclotron Laboratory, which has now been converted into the Facility for Rare Isotope Beams. The author mentions working at this facility and expresses enthusiasm for the amazing work done there, recommending others to visit if they have the opportunity.
Top 2 Comment Summary
The article discusses the absence of stable isotopes with 5 or 8 nucleons. The author finds it interesting and examines a chart to confirm this. They suggest that the absence of stable isotopes with 5 and 8 nucleons could be explained by the stability of 2 distinct Helium-4 atoms. The author expresses hope for a physical model that can explain the structure of a nucleus in relation to these observations.
8. Apple’s Trademark Exploit
Total comment counts : 16
Summary
The article discusses how Apple uses a loophole in trademark law to exploit Customs and Border Patrol (CBP) in order to seize competing products. Apple registers its logo trademark with CBP and pays fees to ensure stricter enforcement on the trademarks they request. CBP seizes goods that it identifies as counterfeit and destroys or sells them at auction. Apple participates in CBP’s e-Recordation Program and gets to train law enforcement on how to identify their products. CBP has seized legal, non-counterfeit products from companies such as OnePlus because Apple claimed they violated their trademark. This system allows Apple to harm consumers, attack competitors, and inject risk into buying products from their rivals.
Top 1 Comment Summary
The article discusses the case of 2,000 seized OnePlus Buds by US Customs and Border Protection, mistaken for counterfeit Apple AirPods. The agency released a statement defending the seizure, while OnePlus criticized the move and argued for the authenticity of their product. It is not mentioned whether the company wrote off the shipment or continued selling the seized units.
Top 2 Comment Summary
This article discusses the confiscation of “grey market” or illegal products that feature the Apple logo. If a manufacturer has the Apple logo on a part, it likely means that the manufacturer made that part specifically for Apple and is not allowed to produce more for other customers. Additionally, if these pieces were made for Apple but did not pass quality assurance, the manufacturer is not permitted to sell them and must instead destroy them. Therefore, if an Apple logo is present on a product, it is either a counterfeit item, a stolen official part, or a failed QA product that should have been recycled. The author suggests that if they were to pay a manufacturer for a compatible part, they would not expect to see an Apple logo on it.
9. Suzuki Omnichord Heaven
Total comment counts : 8
Summary
The article is about not having permission to access a specific webpage on a server.
Top 1 Comment Summary
The article mentions a magical instrument and provides a link for further information.
Top 2 Comment Summary
The article mentions that the Omnichord series is being revived with a new anniversary model, with a launch date set for December.
10. Euclid’s First Images
Total comment counts : 11
Summary
The article discusses how ESA’s Euclid space mission has released its first full-color images of the cosmos. These images demonstrate Euclid’s ability to create sharp astronomical images across a large portion of the sky and at great distances. Euclid’s mission is to investigate the role of dark matter and dark energy in shaping the Universe. By observing the shapes, distances, and motions of billions of galaxies, Euclid aims to create the most extensive 3D map of the Universe, shedding light on the mysteries of dark matter and dark energy. The article also highlights specific images captured by Euclid, including the Perseus Cluster of galaxies, the spiral galaxy IC 342, the irregular galaxy NGC 6822, the globular cluster NGC 6397, and the Horsehead Nebula. These images provide valuable insights into the distribution of matter in the Universe and offer new information about nearby celestial objects. Euclid’s mission is a collaborative effort between ESA, NASA, and the Euclid Consortium, and the data collected will be made available to the scientific community.
Top 1 Comment Summary
The article discusses the use of Euclid’s VIS instrument to capture an overlay image of the Moon and the sky. The image is created by combining data recorded by the instrument’s 36 detectors. The article provides a link for readers to access the image.
Top 2 Comment Summary
This article discusses the advantage offered by the Euclid mission over the Webb telescope. It also mentions that the Lagrange point, where Webb is located along with other objects, is becoming crowded.