https://www.pgelephant.com/postgresql/postgresql-database-indexes-complete-production-troubleshooting 2026-08-29T08:57:53+00:00 weekly 0.85 https://i3.ytimg.com/vi/rO8MQa0m7w0/hqdefault.jpg PostgreSQL Database Indexes: Complete Production Troubleshooting Before we open a single terminal, here is what you are getting. Every index type PostgreSQL 18 ships, on a five million row table. Measured, not guessed. You will watch the planner refuse a perfectly good index, and you will find out why. If you have ever added an index and watched nothing get faster, this is the one that fixes it. https://www.youtube.com/embed/rO8MQa0m7w0 2026-08-29T08:57:53+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/postgresql/amazon-aurora-postgresql-database-what-happens-when-it-fails 2026-08-12T09:15:10+00:00 weekly 0.85 https://i4.ytimg.com/vi/ktxMp16wyCw/hqdefault.jpg Amazon Aurora PostgreSQL Database: What Happens When It Fails? Managed doesn't mean unbreakable. But on Aurora, the thing that breaks is compute. Your data sits in a separate storage service that the instance failure never touched. So when the writer dies, what happens next depends on one question. Do you have a replica? With one, Aurora promotes it, usually in under thirty seconds. Without one, Aurora has to build you a new writer, and that takes minutes. Lose a whole availability zone and writes keep going. We'll build all of it, break it, and measure it. https://www.youtube.com/embed/ktxMp16wyCw 2026-08-12T09:15:10+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/postgresql/postgresql-active-active-across-3-regions-production-ha 2026-08-10T05:49:12+00:00 weekly 0.85 https://i1.ytimg.com/vi/Pb40avdFFBs/hqdefault.jpg PostgreSQL Active-Active Across 3 Regions | Production HA Three writable PostgreSQL regions. No single global primary - all three accept writes at once. That is active-active, with pgEdge Spock. When one region dies, the survivors keep writing. https://www.youtube.com/embed/Pb40avdFFBs 2026-08-10T05:49:12+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/postgresql/amazon-rds-postgresql-database-what-happens-when-it-fails 2026-08-07T13:20:26+00:00 weekly 0.85 https://i2.ytimg.com/vi/ETjUXzKFp4I/hqdefault.jpg Amazon RDS PostgreSQL Database: What Happens When It Fails? Managed doesn't mean it never breaks. When the writer goes away, every open connection goes with it. What happens next depends on the architecture you picked. Single-AZ has no standby, so recovery means a restart, or a replacement. AWS documents sixty to one hundred twenty seconds for a Multi-AZ DB instance, and under thirty-five for a Multi-AZ DB cluster. Sockets never migrate. So we build each pattern, break it, and measure what the application sees. https://www.youtube.com/embed/ETjUXzKFp4I 2026-08-07T13:20:26+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/postgresql/postgresql-16-cores-this-query-uses-one 2026-08-05T19:28:28+00:00 weekly 0.85 https://i4.ytimg.com/vi/SxeeJnmdUf4/hqdefault.jpg PostgreSQL: 16 Cores. This Query Uses One PostgreSQL: 16 Cores. This Query Uses One. A detailed PostgreSQL article and long-form video by Dr. Ibrar Ahmed, with technical context, examples, and production guidance. https://www.youtube.com/embed/SxeeJnmdUf4 2026-08-05T19:28:28+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/postgresql/postgresql-ha-architecture-surviving-a-full-region-failure 2026-08-04T09:18:02+00:00 weekly 0.85 https://i4.ytimg.com/vi/gcSWFKX89vo/hqdefault.jpg PostgreSQL HA Architecture: Surviving a Full Region Failure Let's build a PostgreSQL cluster that survives things going wrong, and let's build it one honest step at a time. This is where everyone starts: one application, one PostgreSQL eighteen server called db one. A write arrives, it is recorded in the write-ahead log, and the commit comes back. It works perfectly. And that is exactly the trap, because the postgres processes, the kernel, the disk, and the address your clients dial all live inside a single failure domain. https://www.youtube.com/embed/gcSWFKX89vo 2026-08-04T09:18:02+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/postgresql/postgresql-high-availability-build-break-fix-patroni-etcd 2026-07-29T18:07:27+00:00 weekly 0.85 https://i2.ytimg.com/vi/a73oSuoeGPY/hqdefault.jpg PostgreSQL High Availability: Build, Break & Fix Patroni + etcd Let's build a PostgreSQL cluster that survives things going wrong, and let's build it one honest step at a time. This is where everyone starts: one application, one PostgreSQL eighteen server called db one. A write arrives, it is recorded in the write-ahead log, and the commit comes back. It works perfectly. And that is exactly the trap, because the postgres processes, the kernel, the disk, and the address your clients dial all live inside a single failure domain. https://www.youtube.com/embed/a73oSuoeGPY 2026-07-29T18:07:27+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/postgresql/500-postgresql-connections-470-idle-fix-this-before-production-slows 2026-07-19T21:13:59+00:00 weekly 0.85 https://i4.ytimg.com/vi/7CBQcT8doaE/hqdefault.jpg 500 PostgreSQL Connections, 470 Idle: Fix This Before Production Slows 500 PostgreSQL Connections, 470 Idle: Fix This Before Production Slows. A detailed PostgreSQL article and long-form video by Dr. Ibrar Ahmed, with technical context, examples, and production guidance. https://www.youtube.com/embed/7CBQcT8doaE 2026-07-19T21:13:59+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/postgresql/postgresql-uses-1-of-16-cpu-cores-here-s-the-fix 2026-07-13T12:02:35+00:00 weekly 0.85 https://i4.ytimg.com/vi/_1bqNyb_t1w/hqdefault.jpg PostgreSQL Uses 1 of 16 CPU Cores. Here's the Fix. PostgreSQL Uses 1 of 16 CPU Cores. Here's the Fix.. A detailed PostgreSQL article and long-form video by Dr. Ibrar Ahmed, with technical context, examples, and production guidance. https://www.youtube.com/embed/_1bqNyb_t1w 2026-07-13T12:02:35+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/postgresql/your-postgresql-work-mem-is-a-400-gb-memory-bomb 2026-06-26T10:48:40+00:00 weekly 0.85 https://i2.ytimg.com/vi/1KJryLXOlMU/hqdefault.jpg Your PostgreSQL work_mem Is a 400 GB Memory Bomb Your PostgreSQL work_mem Is a 400 GB Memory Bomb. A detailed PostgreSQL article and long-form video by Dr. Ibrar Ahmed, with technical context, examples, and production guidance. https://www.youtube.com/embed/1KJryLXOlMU 2026-06-26T10:48:40+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/postgresql/postgresql-19-the-join-stat-fix-we-waited-10-years-for 2026-06-25T23:20:01+00:00 weekly 0.85 https://i3.ytimg.com/vi/NeUJvl0y1fg/hqdefault.jpg PostgreSQL 19: The Join Stat Fix We Waited 10 Years For PostgreSQL 19: The Join Stat Fix We Waited 10 Years For. A detailed PostgreSQL article and long-form video by Dr. Ibrar Ahmed, with technical context, examples, and production guidance. https://www.youtube.com/embed/NeUJvl0y1fg 2026-06-25T23:20:01+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/postgresql/postgresql-19-finally-see-which-tables-need-vacuum-new-feature 2026-06-24T10:58:47+00:00 weekly 0.85 https://i3.ytimg.com/vi/Bjr5H-5PN4I/hqdefault.jpg PostgreSQL 19: Finally See Which Tables Need VACUUM (New Feature) If you run Postgres in production, this is the single most important video you can watch. Vacuum is not a maintenance command. Vacuum is the subsystem that decides whether your database keeps running or falls over. https://www.youtube.com/embed/Bjr5H-5PN4I 2026-06-24T10:58:47+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/how-to-access-the-dark-web-in-5-steps-tor-browser 2026-10-03T06:53:31+00:00 weekly 0.85 https://i2.ytimg.com/vi/iyl3-oGxRPs/hqdefault.jpg How to Access the Dark Web in 5 Steps (Tor Browser) Who is watching you on the dark web? One request. Two routes. On the normal web, the destination sees where you came from. Tor changes who gets to know each part of the path. https://www.youtube.com/embed/iyl3-oGxRPs 2026-10-03T06:53:31+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/why-does-tor-use-three-relays 2026-10-03T01:36:08+00:00 weekly 0.85 https://i2.ytimg.com/vi/U3yAXxttGYY/hqdefault.jpg Why Does Tor Use Three Relays? Why does Tor use a guard, middle relay, and exit instead of one direct proxy? Each position receives enough information to forward traffic, but not the complete route. The guard sees the client side, the middle sees adjacent relays, and the exit sees the onward destination. That separation is the mechanism: distributed knowledge-not invisibility and not magic. https://www.youtube.com/embed/U3yAXxttGYY 2026-10-03T01:36:08+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/tor-is-not-safety-what-it-cannot-protect 2026-09-30T14:27:11+00:00 weekly 0.85 https://i4.ytimg.com/vi/oiUdGaTYGxE/hqdefault.jpg Tor Is Not Safety: What It Cannot Protect Tor can protect parts of a network route. It cannot prove that a person, service, payment, or downloaded file is safe. An onion address authenticates a cryptographic onion identity. It is not a character reference or safety certificate. Tor may perform its routing job correctly while an account, payment, file, or human decision still identifies or harms someone. https://www.youtube.com/embed/oiUdGaTYGxE 2026-09-30T14:27:11+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/how-the-dark-web-actually-works-tor-explained 2026-09-30T08:59:08+00:00 weekly 0.85 https://i3.ytimg.com/vi/R94IuYXDnwM/hqdefault.jpg How the Dark Web Actually Works (Tor Explained) Who is watching you on the dark web? One request. Two routes. On the normal web, the destination sees where you came from. Tor changes who gets to know each part of the path. https://www.youtube.com/embed/R94IuYXDnwM 2026-09-30T08:59:08+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/inside-a-dark-web-marketplace-how-it-really-works 2026-09-22T21:55:25+00:00 weekly 0.85 https://i1.ytimg.com/vi/DfqlxU35Qj4/hqdefault.jpg Inside a Dark Web Marketplace: How It Really Works Who is watching you on the dark web? One request. Two routes. On the normal web, the destination sees where you came from. Tor changes who gets to know each part of the path. https://www.youtube.com/embed/DfqlxU35Qj4 2026-09-22T21:55:25+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/why-doesn-t-pegasus-infect-everyone 2026-09-21T14:59:33+00:00 weekly 0.85 https://i1.ytimg.com/vi/Hki5cWkAsLU/hqdefault.jpg Why Doesn't Pegasus Infect Everyone? Why not infect everyone? Pegasus is mercenary spyware. Expensive. Aimed at selected phones. Expensive exploits. Limited infrastructure. High-value targets. A patch can destroy an exploit's value. Not mass malware. Full episode: Pegasus Spyware: How Your Phone Gets Hacked Without a Click https://www.youtube.com/embed/Hki5cWkAsLU 2026-09-21T14:59:33+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/does-pegasus-break-encryption-no-it-takes-the-phone 2026-09-21T05:44:11+00:00 weekly 0.85 https://i1.ytimg.com/vi/TvriCytGIwU/hqdefault.jpg Does Pegasus Break Encryption? No. It Takes the Phone. Does Pegasus break encryption? It does not need to. Encryption protects data in transit. A compromised phone sees the message after decryption. Encryption intact. Endpoint compromised. The phone is the hole. Full episode: Pegasus Spyware: How Your Phone Gets Hacked Without a Click https://www.youtube.com/embed/TvriCytGIwU 2026-09-21T05:44:11+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/pegasus-spyware-how-your-phone-gets-hacked-without-a-click 2026-09-21T05:27:50+00:00 weekly 0.85 https://i4.ytimg.com/vi/KZRynyddTvg/hqdefault.jpg Pegasus Spyware: How Your Phone Gets Hacked Without a Click Pegasus Spyware: How Your Phone Gets Hacked Without a Click How mercenary spyware works | CYBER MECHANICS What if someone wanted everything on your phone - messages, microphone, photos, location, even end-to-end encrypted messages after they reach your phone - and you never clicked a link? For some Pegasus attacks, that was the point. https://www.youtube.com/embed/KZRynyddTvg 2026-09-21T05:27:50+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/did-you-click-a-link-pegasus-didn-t-need-you-to 2026-09-20T17:21:45+00:00 weekly 0.85 https://i3.ytimg.com/vi/ftKb1-QxXRQ/hqdefault.jpg Did You Click a Link? Pegasus Didn't Need You To. Did you click a link? Messages. Microphone. Photos. Location. You never needed to click. Zero-click attacks software that processes incoming data automatically. For some Pegasus attacks, the target did nothing. Full episode: Pegasus Spyware: How Your Phone Gets Hacked Without a Click https://www.youtube.com/embed/ftKb1-QxXRQ 2026-09-20T17:21:45+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/153-million-ids-stolen-where-they-go-on-the-dark-web 2026-09-19T11:22:01+00:00 weekly 0.85 https://i3.ytimg.com/vi/F6FMSk5bBU8/hqdefault.jpg 153 Million IDs Stolen: Where They Go on the Dark Web 153 Million IDs Hit the Dark Web. Here’s What We Know What Happens After Identity Data Is Copied | CYBER MECHANICS Reports claim as many as 153 million identity records. IDScan has confirmed a security incident. The FBI is investigating. The count is still a reported claim. A password can be changed. A card can be replaced. https://www.youtube.com/embed/F6FMSk5bBU8 2026-09-19T11:22:01+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/this-video-is-real-the-story-is-fake 2026-09-18T03:33:35+00:00 weekly 0.85 https://i4.ytimg.com/vi/SIjKERec2D0/hqdefault.jpg This Video Is Real. The Story Is Fake. This video is real. The story attached to it isn't. Same video. New caption. New story. Deepfake detection won't catch a false story attached to a real video. Verify the claim, not only the pixels. Full episode: https://youtu. be/2SaUc05Jzes Defensive education only. No creation recipes. https://www.youtube.com/embed/SIjKERec2D0 2026-09-18T03:33:35+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/your-ceo-wants-240-000-would-you-trust-the-live-call 2026-09-16T13:52:21+00:00 weekly 0.85 https://i2.ytimg.com/vi/qKtkj_sSX0E/hqdefault.jpg Your CEO Wants $240,000. Would You Trust the Live Call? Your CEO is live on video asking you to transfer $240,000. Would you approve it? Don't. A live call is not proof of identity. Video is not authorization. Call back using a number you already know. The $240,000 transfer in this clip is fictional. The method is not. Full episode: https://youtu. be/2SaUc05Jzes Defensive education only. https://www.youtube.com/embed/qKtkj_sSX0E 2026-09-16T13:52:21+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/which-one-is-the-deepfake-both-are 2026-09-15T12:23:59+00:00 weekly 0.85 https://i1.ytimg.com/vi/lQPR6D03KLU/hqdefault.jpg Which One Is the Deepfake? (Both Are) Which one is fake? If you were checking blinking, skin or teeth, that is the problem. Both are synthetic. Clues are not proof. Six better checks in the full video. Full episode: https://youtu. be/2SaUc05Jzes Defensive education only. No creation recipes. https://www.youtube.com/embed/lQPR6D03KLU 2026-09-15T12:23:59+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/can-you-spot-the-deepfake-5-signs-that-give-it-away 2026-09-15T07:36:24+00:00 weekly 0.85 https://i3.ytimg.com/vi/2SaUc05Jzes/hqdefault.jpg Can You Spot the Deepfake? 5 Signs That Give It Away Two webcam feeds. One question. If you were checking blinking, teeth, skin or eyes, that is exactly the problem. Modern fake video hides many of the old tells. A clean face is not authenticated. Your eyes are only layer one. This Cyber Mechanics episode teaches a six-layer check instead of a glitch hunt: 1. SOURCE - where did the file come from? https://www.youtube.com/embed/2SaUc05Jzes 2026-09-15T07:36:24+00:00 Dr. Ibrar Ahmed yes no no https://www.pgelephant.com/cybersecurity/can-malware-ask-an-ai-what-to-do 2026-09-11T13:07:30+00:00 weekly 0.85 https://i4.ytimg.com/vi/W4DghOeUlbI/hqdefault.jpg Can Malware Ask an AI What to Do? Can malware ask an AI what to do? PromptSteal did. Observed in live operations. Malware. A hosted model. A generated instruction. Local execution. Operators used to send the commands. Now a language model can write them at runtime. This is defensive reporting, not a how-to. Full episode: https://youtu. be/6JLbN9PHsSI No payloads. https://www.youtube.com/embed/W4DghOeUlbI 2026-09-11T13:07:30+00:00 Dr. Ibrar Ahmed yes no no