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Signed-off-by: Raj Patil <rajp152k@gmail.com>
rajp152k · Jan 16, 2025 · 7aef60d · 7aef60d
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diff --git a/Content/20230718223411-flow.org b/Content/20230718223411-flow.org
@@ -2,7 +2,7 @@
 :ID:       20230718T223411.394444
 :END:
 #+title: flow
-#+filetags: :book:
+#+filetags: :meta:book:
 
 * Key takeaways
 

diff --git a/Content/20231129193025-processing.org b/Content/20231129193025-processing.org
@@ -1,5 +1,6 @@
 :PROPERTIES:
 :ID:       8afb9d29-252b-4f17-ad42-700444fe4464
+:ROAM_ALIASES: Compute
 :END:
 #+title: Processing
 #+filetags: :meta:

diff --git a/Content/20240212173904-cloud_computing.org b/Content/20240212173904-cloud_computing.org
@@ -4,13 +4,15 @@
 #+title: Cloud Computing
 #+filetags: :root:cloud:programming:
 
-In the context of [[id:5c2039f5-0c44-4926-b2d7-a8bf471923ac][Software Engineering]], see [[id:739d8493-d7a6-4eee-b31a-44d087f4fb42][cloud native]]
+In the context of [[id:5c2039f5-0c44-4926-b2d7-a8bf471923ac][Software Engineering]], see [[id:739d8493-d7a6-4eee-b31a-44d087f4fb42][cloud native]].
+In the context of [[id:a9430614-4e6e-41ff-9788-0f51c2867e74][Hardware]], see [[id:fc34b43d-57e6-49a7-a678-8ec9df4d0c55][virtualization]]
 
 * Distilled
 Most of the services a cloud vendor provides can be segregated along the dimensions (via qualitative and quantitative elaborations) of:
  - Compute
  - Storage
  - Networking
+
 * Abstract
 
 This is an epistemological dive into the nature of cloud computing services.

diff --git a/Content/20240215173927-virtualization.org b/Content/20240215173927-virtualization.org
@@ -9,6 +9,13 @@ A form of [[id:20230715T174319.700414][mapping]] that allows one to simulate som
 This something can be compute, storage or networking [[id:a9430614-4e6e-41ff-9788-0f51c2867e74][Hardware]].
 
 Exploring in depth, specifically in the context of [[id:7291bab2-4e69-47ad-ae37-f3da260b1d89][Linux Virtualization]]
+
+The overarching aspects to consider when dealing with virtualization:
+ - [[id:8afb9d29-252b-4f17-ad42-700444fe4464][Compute]]
+ - [[id:a4e712e1-a233-4173-91fa-4e145bd68769][Network]]
+ - [[id:18491388-2dcc-488f-8f33-00582cf0f77e][Storage]]
+ - [[id:6c4c5f5c-eb8e-461c-9d70-47b2acf010b2][I/O]]
+
 * Hypervisor
 This is the software responsible for the indirection of resources into symbolic units in the virtualized machines. Two basic types:
 

diff --git a/Content/20241102081419-multitenancy.org b/Content/20241102081419-multitenancy.org
@@ -8,40 +8,44 @@
 ** *Definition*
 Multitenancy is a software architecture where a single instance of a software application serves multiple customers, referred to as tenants. Each tenant's data is isolated and remains invisible to other tenants.
 
+The strategic choices needed to facilitate the of this isolation is what makes this an interesting engineering exercise
+
 ** *Components*:
   - *Tenant*: An individual user, a group, or an organization that uses the shared software service but experiences it as though it is solely dedicated to their use.
+
   - *Instance*: A single deployment of the software solution that supports multiple tenants.
+
   - *Isolation*: Techniques that keep tenant data and configurations separate from one another to ensure privacy and personalization.
 
-** *Types of Multitenancy*:
+** *Types of Multitenancy(Product Orientation)*:
+
   - *Physical Multitenancy*: Different physical machines host different tenants.
+
   - *Virtual Multitenancy*: Virtualization technology allows multiple tenants to share hardware resources.
+
   - *Application-Level Multitenancy*: A single application serves multiple tenants, typically providing each with a customizable experience.
 
 ** *Benefits*:
+
   - *Cost Efficiency*: Reduced operational costs as resources are shared among tenants.
+
   - *Scalability*: Easier scaling since the architecture is designed to accommodate multiple tenants.
+
   - *Simplified Management*: Centralized management and updates for software applications.
 
 ** *Challenges*:
+
   - *Security Concerns*: Potential risks of data breaches or leaks between tenants.
+
   - *Customization*: Balancing between offering shared resources and the customization needs of different tenants.
+
   - *Performance*: Ensuring that the performance is optimal and equitable across all tenants.
 
 ** *Applications*:
-  - Widely used in SaaS (Software as a Service) products like CRM systems.
-  - Employed in cloud computing platforms to optimize resource utilization.
-
-** Connections and Insights
 
-- Multitenancy aligns with the broader trends in cloud computing and SaaS, providing a practical means of delivering services at scale.
-- Physical, virtual, and application-level multitenancy represents a spectrum of implementation strategies, each with trade-offs in terms of cost, performance, and security.
+  - Widely used in [[id:cbcb26f4-dd24-4f59-8003-25573a7cd034][SaaS]] (Software as a Service)
 
-** Exploring Further
-
-- How do differing implementations of multitenancy impact the scalability and flexibility of a SaaS product?
-- What best practices exist for ensuring data isolation and security in a multitenant architecture?
-- How does multitenancy compare with single-instance architectures in terms of cost and operational efficiency?
+  - Employed in [[id:bc1cc0cf-5e6a-4fee-b9a5-16533730020a][cloud computing]] platforms to optimize resource utilization.
 
 * Data Isolation Mechanisms
 ** Primal Types
@@ -57,9 +61,21 @@ Multitenancy is a software architecture where a single instance of a software ap
 ** Connections and Insights
 
 - Logical isolation balances resource efficiency with data separation, suitable for environments where cost is a concern.
+
 - Dedicated schema and separate databases increase isolation but might introduce higher complexity and costs.
-- Encryption serves as a critical layer of security across all types.
 
+- Encryption serves as a critical layer of security across all types.
 
+* Explicit Aspects
+** [[id:11c09e36-bdef-4977-9142-6d8ec0e697ba][QoS]]
+** [[id:7a7aad21-1c48-4d2c-9962-9a39e5bfe554][Data Privacy]]
+** [[id:03f2c24c-ff4f-4ea7-a3b1-fa44ebd81a62][The Noisy Neighbor]]
+** [[id:f2a87da7-b720-487b-87ad-1ff25ce4283a][Network Policies]]
+* Fundamental Aspects
+** [[id:d4f81cb7-e01b-4115-b8a1-9a303a82699d][Principle of Least Privelege]]
+* Relevant Flavours
+** [[id:607feebd-1de7-438e-906a-ddcb29e81ed1][K8s-MultiTenancy]]
 * Resources
  - https://www.ranthebuilder.cloud/videos
+ - https://kubernetes.io/docs/concepts/security/multi-tenancy/
+ - https://www.cloudflare.com/learning/cloud/what-is-multitenancy/
diff --git a/Content/20241102085521-identity_and_access_management.org b/Content/20241102085521-identity_and_access_management.org
@@ -2,4 +2,4 @@
 :ID:       4e1d433c-9f6b-46c7-ad06-4f8bf798785e
 :END:
 #+title: Identity and Access Management
-#+filetags: :sec:
+#+filetags: :cs:sec:
diff --git a/Content/20250101161813-resumes.org b/Content/20250101161813-resumes.org
@@ -23,7 +23,9 @@ From time to time, I land up in an interesting corner of the internet and find i
  - https://karthinks.com/
 ** Mark Watson
  - https://markwatson.com/
-** [[id:fbd38417-13a0-4cda-b256-ee1ab94048f0][Paul Graham]]
+** Patrick McKenzie
+ - https://www.kalzumeus.com/
+** Paul Graham
  - https://paulgraham.com/
 ** Protesilaos Stavrou
  - https://protesilaos.com/

diff --git a/Content/20250112191057-dunning_kruger.org b/Content/20250112191057-dunning_kruger.org
@@ -0,0 +1,8 @@
+:PROPERTIES:
+:ID:       d543f055-3129-440b-9ff0-85a19b12b101
+:END:
+#+title: Dunning Kruger
+#+filetags: :meta:
+
+* Resources
+ - https://en.wikipedia.org/wiki/Dunning–Kruger_effect
diff --git a/Content/20250115144143-i_o.org b/Content/20250115144143-i_o.org
@@ -0,0 +1,5 @@
+:PROPERTIES:
+:ID:       6c4c5f5c-eb8e-461c-9d70-47b2acf010b2
+:END:
+#+title: I/O
+#+filetags: :meta:cs:
diff --git a/Content/20250116092003-mma.org b/Content/20250116092003-mma.org
@@ -0,0 +1,17 @@
+:PROPERTIES:
+:ID:       47545184-3ff9-4533-a756-932a9e480cda
+:END:
+#+title: MMA
+#+filetags: :mma:
+
+* Stream
+** 0x2341
+ - two days ago, I moved my workouts from full-body power-building sessions into kick-boxing lessons.
+ - inspired by the [[id:e57d90a9-7a2b-4fd4-927c-9b6525411625][jargon file]]: http://www.catb.org/~esr/jargon/html/physical.html
+ - I've already begun experiencing minor bouts of [[id:20230718T223411.394444][flow]] in the first two sessions and was unknowingly practicing the 1-2 (jab-cross) in a [[id:e8c4ec47-e30f-4d02-af22-c450b6e96968][lucid dream]]
+ - really sore and can already see how shit my conditioning and endurance is
+ - initiating the season to build a weapon of a body and mind
+ - also started reading "[[id:cd004234-c3dd-4e76-ae77-7b2fd15e0beb][kick-boxing]]" by Pat O'Keeffe
+ - I'll also be maintaining epistemological and pragmatic accounts of whatever combat sports I explore in my life
+ - some interesting reads: https://www.clearerthinking.org/post/lessons-in-truth-seeking-from-the-world-of-martial-arts
+ - It also all began quite a while ago (~4 years) when I read Bruce Lee's Biography by Matthew Poly and learned about [[id:347ed26c-bbb4-4d15-a705-6df388f55d02][Jeet Kune Do]]
diff --git a/Content/20250116092711-lucidity.org b/Content/20250116092711-lucidity.org
@@ -0,0 +1,5 @@
+:PROPERTIES:
+:ID:       e8c4ec47-e30f-4d02-af22-c450b6e96968
+:END:
+#+title: Lucidity
+#+filetags: :mind:meta:
diff --git a/Content/20250116092857-kick_boxing.org b/Content/20250116092857-kick_boxing.org
@@ -0,0 +1,8 @@
+:PROPERTIES:
+:ID:       cd004234-c3dd-4e76-ae77-7b2fd15e0beb
+:END:
+#+title: Kick Boxing
+#+filetags: :mma:
+
+* Resources
+ - https://budodragon.com/the-best-kickboxing-books/
diff --git a/Content/20250116095536-jeet_kune_do.org b/Content/20250116095536-jeet_kune_do.org
@@ -0,0 +1,9 @@
+:PROPERTIES:
+:ID:       347ed26c-bbb4-4d15-a705-6df388f55d02
+:END:
+#+title: Jeet Kune Do
+#+filetags: :mma:
+
+
+* Resources
+ - https://bruceleefoundation.org/jeetkunedo/
diff --git a/Content/20250116104532-k8s_multitenancy.org b/Content/20250116104532-k8s_multitenancy.org
@@ -0,0 +1,19 @@
+:PROPERTIES:
+:ID:       607feebd-1de7-438e-906a-ddcb29e81ed1
+:END:
+#+title: K8s-MultiTenancy
+#+filetags: :cs:k8s:
+
+See [[id:49b0dd1e-ca9e-46fa-a0b9-db0ec330833d][MultiTenancy]]
+
+* Supplementary Misc Aspects
+** Control and Data
+ - Control Plane (masters)
+ - Data Plane Tenancy
+
+* Mechanisms
+** [[id:92f509f7-5b8f-4beb-a66c-7890e79c84a3][Namespaces]]
+** [[id:1d52ebeb-5e1f-4069-8c36-99611fa0659b][Virtual Clusters]]
+* Resources
+ - https://kubernetes.io/docs/concepts/security/multi-tenancy/
+ -   https://github.com/kubernetes/community/blob/master/sig-multicluster/README.md
diff --git a/Content/20250116104757-data_privacy.org b/Content/20250116104757-data_privacy.org
@@ -0,0 +1,5 @@
+:PROPERTIES:
+:ID:       7a7aad21-1c48-4d2c-9962-9a39e5bfe554
+:END:
+#+title: Data Isolation
+#+filetags: :cs:sec:
diff --git a/Content/20250116104858-rbac.org b/Content/20250116104858-rbac.org
@@ -0,0 +1,6 @@
+:PROPERTIES:
+:ID:       fa347a1f-3277-41ff-8643-63e8aecd2869
+:ROAM_ALIASES: "Role Based Access Control"
+:END:
+#+title: RBAC
+#+filetags: :sec:cs:
diff --git a/Content/20250116105448-virtual_clusters.org b/Content/20250116105448-virtual_clusters.org
@@ -0,0 +1,5 @@
+:PROPERTIES:
+:ID:       1d52ebeb-5e1f-4069-8c36-99611fa0659b
+:END:
+#+title: K8S Virtual Clusters
+#+filetags: :k8s:
diff --git a/Content/20250116105946-network_policies.org b/Content/20250116105946-network_policies.org
@@ -0,0 +1,8 @@
+:PROPERTIES:
+:ID:       f2a87da7-b720-487b-87ad-1ff25ce4283a
+:END:
+#+title: Network Isolation
+#+filetags: :cs:sec:
+
+* Relevant Nodes
+** [[id:821aa28f-c16d-4982-bfc7-e1c9cf82c987][Service Meshes]]
diff --git a/Content/20250116110616-the_noisy_neighbor.org b/Content/20250116110616-the_noisy_neighbor.org
@@ -0,0 +1,5 @@
+:PROPERTIES:
+:ID:       03f2c24c-ff4f-4ea7-a3b1-fa44ebd81a62
+:END:
+#+title: The Noisy Neighbor
+#+filetags: :cs:meta: