CrypticMessenger

Primitive / Concept	What is it?	Why use it? (The Problem)	Where to use? (Use-Cases)	Key Notes & Trade-offs
Volatile Keyword	Lightweight synchronization that guarantees visibility (reads/writes go directly to main memory).	Prevents threads from reading stale data from CPU caches and prevents instruction reordering by the compiler.	Status Flags: Simple boolean signals like shutdownRequested to stop a task.	Does not guarantee atomicity. Operations like count++ are still unsafe.
Atomics	Non-blocking wrapper classes (AtomicInteger, AtomicReference) using hardware CAS (Compare-And-Swap).	Solves Read-Modify-Write race conditions (like count++) without the overhead of putting threads to sleep.	Counters & Accumulators: Request counters, High Score trackers, or updating a single variable based on its previous value.	Faster than locks for single variables, but difficult to manage invariants in

CrypticMessenger

Source	The "Hack"	Example
Enactive Mastery	Small Wins	Build a "Hello World" app before a SaaS.
Vicarious	"If they can..."	Follow creators who started where you are.
Persuasion	Curate your Circle	Cut out the "Golems"; find "Pygmalions."
Somatic	Relabel Arousal	"My heart is racing because I'm ready."
Imaginal	Future Self	Spend 2 mins visualizing the process of winning.

CrypticMessenger

Source of Efficacy	Potency	Mechanism of Action	Perceptual Mediator
Enactive Mastery	Highest	Direct evidence of performance success.	Attribution: Success must be attributed to internal capability, not luck or ease.
Vicarious Experience	Moderate (Context Dependent)	Observation of comparable peers.	Similarity: The model must be perceived as similar to the observer; fails in isolation.
Social Persuasion	Variable (Catalytic)	Verbal encouragement or feedback.	Credibility: The persuader must be perceived as credible and the feedback as informational.
Affective State

CrypticMessenger

Benchmark Name	Time Taken (ms)	Memory Used (KB)
Baseline (No Cache)	17687	28
UnsafeMemoizer	17508	13
SerializedNaiveSafeMemoizer	18295	14
FineGrainedSafeMemoizer	16927	13
FutureSafeMemoizer	8539	19
ExpiringMemoizer (TTL 5s) - First Run	8489	19
ExpiringMemoizer (TTL 5s) - Second Run	8666	1

CrypticMessenger

/**
 * Iteration 5: Expiring Memoizer
 * A thread-safe implementation of a memoizer that caches computed results with expiration.
 * This implementation uses ConcurrentHashMap for thread-safe cache access and Future
 * to handle ongoing computations. Each cached entry has a time-to-live (TTL) after which
 * it is considered expired and will be recomputed upon the next request.
 */
public class ExpiringMemoizer<A, V> implements Computable<A, V> {
    // ExpiringFuture: holds a Future AND an expiration timestamp
    // Used to track when cached entries should be invalidated

CrypticMessenger

/**
 * Iteration 4: Future-Based Safe Memoizer
 * A thread-safe implementation of a memoizer that caches computed results using Future.
 * This class implements the Computable interface and provides a caching mechanism
 * to store and reuse previously computed results.
 */
public class FutureSafeMemoizer<A, V> implements Computable<A, V> {
    private final Map<A, Future<V>> cache = new ConcurrentHashMap<>();
    private final Computable<A, V> computable;

CrypticMessenger

/**
 * Iteration 3: Fine-Grained Safe Memoizer
 * A thread-safe implementation of a memoizer that caches computed results using fine-grained locking.
 * This implementation uses ConcurrentHashMap to allow concurrent access to the cache,
 * enabling multiple threads to compute and cache results simultaneously without blocking each other.
 */
public class FineGrainedSafeMemoizer<A,V> implements Computable<A,V> {
    private final ConcurrentHashMap<A,V> cache = new ConcurrentHashMap<>();
    private final Computable<A,V> computable;

CrypticMessenger

/**
 * Iteration 2: Serialized Naive Safe Memoizer
 * A thread-safe implementation of a memoizer that caches computed results.
 * This implementation synchronizes the entire compute method, ensuring thread safety
 * but potentially creating performance bottlenecks under high contention.
 */   
public class SerializedNaiveSafeMemoizer<A,V> implements Computable<A,V> {
    @GuardedBy("this") // documents that cache is protected by the intrinsic lock
    private final Map<A,V> cache = new HashMap<>();
    private final Computable<A,V> computable;

CrypticMessenger

package concurrentcache.cache;

import java.util.HashMap;
import java.util.Map;

import concurrentcache.computable.Computable;

/**
 * A basic memoization implementation that caches computed results.
 * This implementation is not thread-safe and should not be used in concurrent environments.

CrypticMessenger

Service	Description	CPU Allocated	Memory Allocated
Service 1	Compute-intensive (e.g., video processing)	cpu1	mem1
Service 2	Memory-intensive (e.g., in-memory caching)	cpu2	mem2
Service 3	Balanced (e.g., API server)	cpu3	mem3