KMKartik Mehtainwriter.mrmehta.in·Sep 23 · 9 min readHow "nearby" actually works?Every time I type "sushi near me" into a maps app, I get a list of places in well under a second. I had never really thought about what happens behind that search. It feels simple. You have my locatio00
ZZyVOPinblog.zyvop.com·Sep 24 · 8 min readConsistent Hashing: Why Adding One Server Shouldn't Move EverythingAdd a fifth server to a four-server cache cluster. With the obvious approach, hash(key) % number_of_servers, something like 80% of your keys suddenly belong to a different server than they did a minut00
ZZyVOPinblog.zyvop.com·Sep 23 · 6 min readBloom Filters: The Data Structure That's Allowed to Lie (A Little)Chrome checks every URL you visit against a list of millions of known malicious sites, before the page loads, without a network round trip for most of them, and without storing a multi-gigabyte blockl00
ASAbirami Sriinabi-blog.hashnode.dev·Sep 3 · 10 min readDay 4 of My 30-Day DSA Journey — Hashing ProblemsDay 4 of my 30 Days of DSA with JavaScript journey. Today, I continued practicing Hashing, Set, and Frequency Counting patterns. The problems I solved today show how hash-based data structures can be 00
ASAbirami Sriinabi-blog.hashnode.dev·Sep 2 · 6 min readDay 3 of My 30-Day DSA Journey — Hashing and Map/Set Patterns1. Two Sum — LeetCode 1 Problem Given an array of integers and a target, return the indices of two numbers whose sum equals the target. Approach For every number, I calculate the value I need: needed 00
VVVidit Vatsindsa-decoded.hashnode.dev·Aug 25 · 4 min readLC-18 4SumGiven an array nums of n integers, return an array of all the unique quadruplets [nums[a], nums[b], nums[c], nums[d]] such that: 0 <= a, b, c, d < n a, b, c, and d are distinct. nums[a] + nums[b] +00
AOAnslem Owhofasainanslem.hashnode.dev·Aug 18 · 5 min readWhy exporting support tickets is a security risk and how to fix it local firstWhen a critical bug, billing dispute, or compliance issue happens, someone on the team inevitably needs to export a support conversation. A security engineer might need the raw thread to investigate a11D
LGLewis Gilchristindevabkk.hashnode.dev·Aug 13 · 8 min readHashing is not the same as anonymizing, and the difference matters"We hash your data so it is never stored in plain text." This is a true statement that can mean very different things depending on what the data is, how the hash is constructed and what the attacker h00
LLIANPRinlianpr.hashnode.dev·Jul 16 · 5 min readWhat Is Hashing in Blockchain? A Beginner-Friendly ExplanationIntroduction: Why Hashing Matters in Blockchain Hashing is one of the most important technologies behind blockchain security. Although the term may sound technical, the basic idea is simple: hashing c00
VVVidit Vatsindsa-decoded.hashnode.dev·Jul 15 · 2 min readLC-1 Two Sum ProblemWe are given an array of integers nums and an integer target. Return indices of the two numbers such that they add up to target. You may assume that each input would have exactly one solution, and you00
