Designing Tenant-Isolated Retrieval for Recruiting Search in 2026

A DEV Community guide argues that tenant isolation in recruiting search must be enforced through indexing and query rules rather than added as an afterthought. It recommends a staged retrieval design with explicit collections, bounded queries, and source traceability so every answer shows which tenant records supported it and when they were refreshed. Each indexed item should carry an immutable tenant identifier, access scope, document ID, and freshness timestamp, with eligibility filtering applied before semantic search. The article also covers freshness policies for replaced résumés, trade-offs between collection-per-tenant and shared-collection designs, and bounded top-k limits, deadlines, and retry behavior. It includes a TypeScript service sketch separating provider integration from isolation and traceability logic.

Founder shelves ChangeBrief after waitlist gets zero sign-ups by deadline

A developer ran a one-page waitlist for ChangeBrief, a browser extension that summarizes webpage changes, with a rule to build only if 20 people signed up by November 9, 2026. The count stood at zero on the deadline, so the project was closed and the sign-up removed, with the page stating no build would happen. It was the second such zero in two days, following the similar TabVault test. The developer concedes the test was weak because the page was never promoted to anyone, and the local-only version tested did not reflect the cloud monitoring that established competitors offer. The developer says the result shows the page never reached an audience rather than proving the market rejects the idea, and is now planning distribution before launching future waitlists.

Node.js Avatar Uploads to S3-Compatible Storage: Metadata, Retention and Private Links

The article argues that avatars should be stored as private objects, with their generated keys and metadata recorded in a database, and accessed through short-lived signed URLs only when needed. Node.js handles authentication, file validation, key generation and the database transaction, while the storage service holds the image bytes. It recommends checking the decoded file type rather than trusting the Content-Type header, enforcing a byte limit before reading the request body, and treating the size limit and deletion schedule as separate controls. The piece includes sample TypeScript code for saving an avatar and notes that an idempotent replacement path and a cleanup strategy for failed inserts are needed. It concludes with a brief example of a REST-based upload request.

How to Generate an XSD Schema Automatically from an XML File

Hand-writing an XSD is tedious and error-prone, since every element, attribute, and data type must be defined manually from an XML sample. Schema inference offers an automated alternative by analyzing the sample's structure and content. Tools map tags to elements, nested tags to complex types, and guess data types such as integers or booleans, while repeated tags receive unbounded occurrence limits. The popular open-source Java tool Trang can produce a basic XSD from the command line, though empty elements default to strings and overly strict occurrence rules may break on real data. The article also cautions that uploading internal XML to online tools poses a security risk, and promotes a client-side generator that runs entirely in the browser.

Developer launches rebranded portfolio site, with projects still in progress

A developer has rebranded and launched a new personal portfolio website at alase.dev. The projects showcased on the site are still under development and not yet complete. The developer aims to finish them by December. Feedback from visitors on the site is being invited.

Testing pgvector, Postgres full-text search, and hybrid RRF on 30 RAG chunks

The author, while building a FastAPI and PostgreSQL RAG pipeline, faced problems with chunking that split financial tables and produced heavily overlapping chunks, plus slow and costly LLM-based evaluation. To address this, they built a local benchmark on PostgreSQL 17 and pgvector 0.8.7 using 30 enterprise chunks and 15 test queries, scoring retrieval with Recall@K, MRR, and NDCG computed locally at no cost. Results showed pure vector search struggled to rank exact error codes and SKUs at the top, pure full-text search failed on semantic paraphrases, and hybrid Reciprocal Rank Fusion performed best overall. The author also reported SQL fixes for stable hybrid search, including a deterministic tiebreaker and a relaxed iterative scan setting for filtered HNSW queries. The benchmark script, dataset, and chunk health checker were released as a free download.

SelfHeal Uses LLM Patches to Repair Failing Python Apps With Rollback Safety

SelfHeal is a tool that responds when a Python function raises an error or fails a health check. It asks a large language model to generate a code patch for the problem. The patch is first checked for syntax and tested with pytest in a copied workspace. The running function is only updated after the user approves the change, and if activation fails, the system reverts to the previous version.

Professor Jarvis thanks readers and outlines its cybersecurity guides in Spanish and English

The team behind Professor Jarvis thanked readers from several countries for following the project. They describe their output as practical cybersecurity guides aimed at everyday users, offered step by step in Spanish and gradually translated into English. The project also plans short vertical videos for YouTube and shares tools and tricks its members use themselves. Readers are invited to suggest security topics in the comments, which the team says it reads and answers.

BJP MLA Claims Diwali Firecrackers Help Cure Diseases, Sparking Debate

Tollygunge BJP MLA Papia Adhikari made claims linking firecrackers to curing several diseases while speaking at a Kali Puja inauguration. Chief Minister Suvendu Adhikari stressed that bursting firecrackers remains an important part of festival celebrations. He also asked citizens to opt for eco-friendly or green crackers and to follow noise regulations. The remarks underline the role firecrackers are seen to play in the Kali Puja festivities. The article does not provide medical evidence supporting the MLA's health claims.

Drugmaker CEOs Remain Skeptical of Silicon Valley's Claims That AI Will Cure Disease

Technology companies in Silicon Valley have been promoting the idea that artificial intelligence will soon lead to cures for a wide range of diseases. Executives at pharmaceutical companies, however, are reportedly unconvinced by these predictions. The Wall Street Journal's report highlights the gap between tech industry optimism and the more cautious view held by the drug industry's leadership. The article, shared on Hacker News, drew modest engagement from readers discussing the topic. The available source material provides only the headline and link, so the specific reasons behind the drugmakers' skepticism are not detailed here.

Court upholds dismissal of Omaha landlord's civil rights suit over 2018 building closure

A federal appeals court has affirmed the dismissal of civil rights claims brought by AB Realty against Omaha officials. The lawsuit stemmed from the city's 2018 decision to close a building over code violations. The company had argued that the closure violated the Fourth, Fifth, and Fourteenth Amendments. However, the court concluded there was not enough evidence to back those allegations. It also found that the city followed legal standards during its inspections.

Rubio Warned Officials About Nvidia CEO's Ties to Suspected Chinese Spy

Secretary of State Marco Rubio played a role in drafting a secret memo, according to reporting on the matter. The memo reflects concern among top officials last spring about Nvidia chief Jensen Huang's relationship with a woman linked to Chinese intelligence. The episode underscores how seriously senior American officials viewed the potential security risks tied to the connection. The article's details focus on the internal warnings rather than any public charges against Huang. Further specifics about the memo's contents and follow-up actions were not included in the provided text.

Zork I Runs on a CP/M Emulator Under Linux, Per a 2021 Write-up

A 2021 article describes how to play the classic text adventure Zork I using a CP/M emulator on a Linux system. The piece, published on the author's personal site, walks through running the CP/M-era software in an emulated environment rather than on original hardware. It was shared on Hacker News, where it drew a small amount of attention with five points and three comments. The article is a hands-on retro computing project rather than a news event. The source material provided here contains only the title, link, and engagement figures, so the details of the setup itself are not described in this summary.

Jeff Bezos' rise from a $890 monthly rent to a $700m property empire over 32 years

Jeff Bezos's property holdings have grown into a reported $700 million portfolio over roughly three decades. The journey reportedly began with a modest rental costing about $890 per month. The article traces how his real estate investments expanded alongside his Amazon business. The source describes the progression as a 32-year path from humble beginnings to a major property empire. Because only the headline and a placeholder were provided, specific details beyond these points could not be verified.

Why birds flap their wings while landing, according to new research

A new study finds that birds flap their wings during landing to improve control and slow down before touching ground. The energy spent on flapping gives them a measurable advantage in achieving a safe touchdown. Mathematical models suggest that landing at zero speed without flapping is impractical for most species. Birds of prey may also swoop to regulate their touchdown speed and avoid stalling just before they land.

She started a food brand in 2009; 17 years later, Ferrero agrees to buy it

Pilots Glide Stricken Air Transat Jet to Safe Landing in the Azores in 2001

In August 2001, an Air Transat flight bound from Canada to Portugal lost both engines in mid-air. The crew managed to glide the aircraft for 19 minutes. They then made an emergency landing at Lajes Air Base in the Azores. All 306 people on board survived, though some were injured in the hard touchdown.

Goldman Sachs Reportedly Pulling Claude Code From Its Bankers and Traders

Goldman Sachs is reportedly removing access to Anthropic's Claude Code tool for its bankers and traders. The move was reported by The State of AI, which the Hacker News post links to. The available material provides only the headline, link, and discussion metadata, so the specific reasons behind the decision are not confirmed here. Further details would need to come from the original report.

Kolkata engineer killed; live-in partner and mother detained

An engineer was reportedly hacked to death in Kolkata, and police have taken his live-in partner and his mother into custody in connection with the killing. The case has drawn attention because the victim was living with his partner at the time of the attack. Investigators are working to establish the sequence of events and the motive behind the crime. Further details about the suspects' roles are expected as the probe continues.

SNL Debuts New Elon Musk Impression Mocking Him as 'the Worst Thing South Africa Has Ever Done'

Saturday Night Live has introduced a new impression of Elon Musk in a sketch that pokes fun at the tech executive. The portrayal includes the line describing him as 'the worst thing South Africa has ever done.' The article notes that SNL appears to be targeting tech executives more broadly with its satirical humor. The source text provided is brief, so further details about the sketch's plot or broadcast date are not available.